Easy access from Nesconset Highway. Wonderful atmosphere and staff is friendly and attentive. I liked that they offer lunch and dinner specials. The salmon salad was fabulous.

We had the best server. Her name was Mercedes. She was a total pro. The salmon burger was delicious and huge. Got an almond horn to go home with. Popped it in the microwave for 10 seconds and it was delicious.

My boyfriend and I came here for breakfast and ordered the Farmer’s Omelette. It was $14.95 for one and we assumed it was going to be a small portion. But boy did we get a surprise. The portion size of this meal was huge! The omelette came with a side of home fries and buttered toast. The home fries weren’t seasoned so it was bland. We seasoned it ourselves with salt and pepper to our liking. The omelette was pretty good and filling. I just didn’t like how there was so much onions inside. But our overall experience was pretty good. The staff are friendly and we got our meals pretty fast. Oh and when you order ground coffee, there’s free refills!

Stopped in here late one night for a late dinner, the food was great, our waitress was very kind and attentive, no issues.

YUM! As I write this I'm eating my leftovers and they are so good. It was an absolute pleasure to eat in the "Lake Grove Diner." I was there with 5 other adults and two children and everyone was delighted with the service, their food, and the place. The waitress was a pleasure and very patient. My egg whites and sweet potato tasted/ tastes so good, I'm looking forward to ordering it again very soon. The menu had so many items to choose from so there's something for everyone. From my delicious egg whites (I know I already mentioned that) to the salmon, everyone was delighted with their choices. I highly recommend stopping by for breakfast, lunch, dinner, dessert, or that midnight snack.

Went here on my visit to Port Jefferson and had a great dinner with my Ladies family. I had the deluxe bacon cheeseburger with fries and it was perfect! I could taste the char on the burger and mmmm it was delicious. Went back for breakfast and had the 2 eggs over medium with sausage and potatoes and the potatoes were crispy without the starchiness. The menu is huuuuge, it would take me years to try everything. Staff is friendly, attentive and the place is spotless.

Great place for a bite to eat. I has that old diner feeling but, in a really good way. It can be a little bit noisy at times. But, otherwise great food and plenty of parking. The bathroom was very clean.

Great menu, fare, and atmosphere. I would come here again.

This is a high volume location, and the tempo was medium to busy, on a Sat morning just before noon. They do a good job of getting you seated quickly. The way that they facilitate such quick turn around times is by getting the food out quickly and turning that table over as soon as possible. A sound business model, indeed. Unfortunately, they rush the cooking step so much, that the quality suffers greatly. I was with a party of two others. My two companions both ordered eggs over easy, which were so undercooked that the whites of the eggs were runny. Over easy eggs should be soft but cooked whites, and still liquid yolks. They were rushed off the grill. I had "two eggs scrambled, dry, with well done fries." On appearance, the eggs looked perfect, as they had a small amount of browning on the top. However, the underside was still runny wet. So, they were cooked well on the one side and just flipped over onto the plate, the other side never seeing the grill. Dry doesn't mean burned, but I can deal with it as long as they are dry, not wet and runny. But I got both downsides, the overcooked half, and the wet runny half. The fries looked gorgeously cooked till brown, I was sure these would be good. However, they were still raw inside. That firm half crunch of an uncooked potato. This tells me the fryer temps were set way, way too high, and scorched the outside while not allowing enough time for the inside to cook. The coffee was fresh and hot, two thumbs up there, as well as the toast, that was fine. But 0 for 3 on the eggs, the easiest and quickest item on the menu to make in my experience, there is no need to rush them. It doesn't matter how smooth all the other steps in the experience are, if the food is lacking, that is what the customer is going to remember. Customers forgive wait times to a very large degree, and it can actually work in your favor, amping up anticipation... Bad food never does. Sorry, Lake Grove Diner, you didn't do it for me. But here is an opportunity to correct what I hope is just an isolated incident.

A Topnotch Dining Experience with Outstanding Staff! Lake Grove Diner is a must-visit for anyone looking for a delicious and satisfying meal. From the moment you step inside, you'll be impressed by the establishment's cleanliness and attention to detail. The food is also incredibly tasty, with an extensive menu that caters to all tastes and preferences. The portions are large, ensuring that you get your money's worth and more. But what really sets Lake Grove Diner apart is its outstanding staff. From the moment you're seated, the friendly and attentive staff will make you feel right at home. They'll take the time to answer any questions you may have and make sure that your dining experience is as pleasant as possible. Another great aspect of Lake Grove Diner is the ample parking available, which makes it easy to get in and out without any hassle. Overall, I highly recommend this Diner. If you're looking for a great dining experience, then Lake Grove Diner is the place to be.

It was my first time there. The atmosphere was very friendly. The food was delicious. Im very thankful for the service. Very cordial and friendly. I will be coming more often to eat there. Keep up the good work.

Food was phenomenal. Presentation, taste and there was plenty for two persons. The management were on point, as they made sure my waitress did her job. The waitress slacked and management was right on top on it. The managers were truly inviting and professional. The restaurant is extremely clean.

It is 1014 on January 21. I just finished leaving the restaurant after waiting eight minutes to be greeted at the door a server then came over and got the food that I was waiting for that had been sitting on the table. He checked it over and saw the two sauces were missing. He went to the back and immediately got me the sauces after he already checked the bag another guy seeming to be a manager. Nasty attitude didn’t even say hi he did ask me if I was waiting for an order I said yes and someone was retrieving sauces that were not in the bag. He then proceeded to recheck the bag open up everything all over again as he is opening it up I’m seeing the steam leave the food he then is telling me if I need to go and I am in a rush I could leave I told him no I have come here to get this food and I am waiting. It’s just it has been checked. It was missing two sauces. He then proceeds to tell me that I can leave. I told him again that I do not want to leave. I would like to retrieve my food after getting angry with me. He then gives me the bag and tells me never to come again I then tell him OK not a problem walked away ! I’m leaving this Message on this platform because a customer should never be told not to come to an establishment again all I did was come to pick up the food. Nobody was there to greet me not only that, but I seen the food each and every plate was opened up, not once but twice and when the food was actually eaten it was cold so with this being said, I have given the store ample time to complete the order. I had the order for 20 minutes. I picked up two other things before this and when getting to the store, I waited an extra 15 minutes just to get cold food. This is just unacceptable and I will take his offer to never ever come there again and I will make sure to tell my family and friends to do the same exact thing this is ungrateful, business taking, this is unacceptable. And a customer should never have to feel as though their dollar or their time is not worth it you will lose all your customers doing this. How about that? Nasty attitudes will never be okay !

Food is good, came out quickly. Service was excellent! We ate at another local diner the night before, and I was disappointed. I asked to come to the Lake Grove Diner, even though it was another 10 minutes away and we were trying to eat quickly, and it did not disappoint.

Food was great! Service could have been a tad better but it was somewhat packed.

I stopped by this place while I was won a work trip and the staff was attentive and informative. I had a well done cheeseburger and the meat was not overcooked or undercooked. It was perfect. Definitely recommend for a quick bite if nearby.

The sweet potato fries were freshly made, and the wrap was well executed! The service was quick and efficient! Thank you Lake Grove Diner!

Excellent customer service and excellent food. We were a party of 2 adults and 3 kids and were all pleased with our meals. Pictured is the Mexican burger, which we should have shared. The adult and children's portions were both huge burgers and plenty fries. There is a dessert section--pies, cookies, pastries that we didnt get to test, as we were so full. We overheard other diners talking about how long they've been customers and how far they traveled to dine there. It's a great family-friendly diner with delicious options.

Lots of choices on the menu. We chose the Skillet, which was delicious and had a generous portion. Service was excellent.

The food was bountiful and delicious. The burger was large and well cooked. The fries were crispy and served in a cute mini fryer basket. The salads were abundant with the chicken piece generously sized. The lettuce wasn't the simple iceberg but contained mixed greens and other ingredients as desired. Highly recommend it for the ability to please every hungry but picky eater.

The food is always good here as is the service. Our waitress was good but the food took a long time for eggs and sandwiches ( approximately 20 minutes). We go frequently although this time the food came out very slowly. We usually depend on this fast service and this time it caused us to be late for an appt.

From the moment we walked in it felt so warm and cozy . Sunday morning breakfast was busy. We were seated in 5 minutes. Service was amazing , waitress was very pleasant and attentive. Food outstanding. No one rushed us. Coffee refills constant. Pricing on point . Definitely will return. All around OUTSTANDING OLD FASHION DINER, BRAVO 👏 10 stars 🌟