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Certificate of Excellence
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625 North Rd. Rte. 117, Groton, CT 06340
6:00 am - 10:00 pm
Open now
All hours
Sun - Thu 6:00 am - 10:00 pm
Fri - Sat 7:00 am - 11:00 pm
More Info
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216 Reviews from our TripAdvisor Community

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Showing 214: English reviews
Level Contributor
22 reviews
10 restaurant reviews
common_n_restaurant_reviews_1bd8 8 helpful votes
3 of 5 stars Reviewed 2 days ago NEW

Lunch was a disappointment at Octagon. Limited menu. Ordered lobster bisque which had no lobster in it - just small white pieces of a mystery fish. The fish and chips was two small and boring pieces of white fish. The french fries were just frozen fries. I expected more based on the reviews. Please be aware that this a hotel... More 

Thank galfromthedale
New York
Level Contributor
104 reviews
55 restaurant reviews
common_n_restaurant_reviews_1bd8 53 helpful votes
5 of 5 stars Reviewed 1 week ago

my family experienced an excellent service & great food from Octagon Restaurant !! great work / service of Luke , Charlotte & Tim !!!! fresh fruits & variety of food !! hot entrees !!! great omellette stand ..loved their freshly squeezed OJ , Refreshing !!! Every guests were served with a large thermos of coffee , you don't have to... More 

Thank NycVen13
Raleigh, North Carolina
Level Contributor
36 reviews
17 restaurant reviews
common_n_restaurant_reviews_1bd8 19 helpful votes
4 of 5 stars Reviewed 2 weeks ago

The restaurant offers a breakfast buffet or menu service. I enjoyed the eggs benedict. There is also an adjoining bar. We did have an issue with our order (appetizers) but the staff quickly rectified it.

Thank conigam
Norwich, Connecticut
Level Contributor
145 reviews
108 restaurant reviews
common_n_restaurant_reviews_1bd8 49 helpful votes
4 of 5 stars Reviewed 2 weeks ago via mobile

We have been countless times at Octogon, and appreciated a good steak and a nice glass of wine, but in time, slowly , have noticed a decrease in the quality of the meats and general atmosphere. You can see it all over from the restaurant were the open grill is now closed to the toilette were the cotton towels have... More 

Thank Cacabesa
Stamford, Ct
Level Contributor
47 reviews
20 restaurant reviews
common_n_restaurant_reviews_1bd8 28 helpful votes
4 of 5 stars Reviewed 4 weeks ago via mobile

We stayed overnight in The Marriott in Groton. We only had breakfast in Octagon. The food was plentiful and delicious. We had a Farmer's omelette and eggs Benedict. The tea was hot and they served Harney tea a big step up from Lipton that most restaurants serve. The waitstaff was very attentive. A nice way to start the day!

Thank dms21
New York City, New York
Level Contributor
4 reviews
4 restaurant reviews
4 of 5 stars Reviewed June 19, 2016 via mobile

Octagon was our go to venue for Father's Day dinner, (VERY convenient as we spent the weekend at the Mystic Marriott.) The menu features seafood, (this is Mystic), as well traditional steak house fare. The menu is varied and offers many options at various price points, making it a great destination for all. The food is quite good and the... More 

Thank rubarry
Tyngsboro, Massachusetts
Level Contributor
143 reviews
55 restaurant reviews
common_n_restaurant_reviews_1bd8 211 helpful votes
3 of 5 stars Reviewed June 11, 2016

We were excited to try this restaurant for dinner as it had received 4 stars from AAA. Not sure why. Very expensive for the experience. Atmosphere was typical hotel dining room. Our table faced the empty buffet area and an open door to a hallway for dirty dishes. Another door opened onto a small office and a man kept coming... More 

Thank KLGB
New York
Level Contributor
410 reviews
245 restaurant reviews
common_n_restaurant_reviews_1bd8 142 helpful votes
3 of 5 stars Reviewed May 31, 2016

Breakfast was quite standard for a Marriott. Nothing special, especially on the cold side of the buffet. On the plus side, the staff is excellent.

Thank FrequentTripster
Westerly, Rhode Island
Level Contributor
105 reviews
64 restaurant reviews
common_n_restaurant_reviews_1bd8 20 helpful votes
5 of 5 stars Reviewed May 13, 2016

What a nice place to dine on Mother's Day. I went with my wife and daughter. We had a late reservation, but the buffet bars had plenty of food and they also cooked some food to order. They had a raw bar, carving station with salmon, steak, pork and chicken, a pasta bar, salad bar, vegetable bar and dessert bar.... More 

Thank Nisty_13
Level Contributor
66 reviews
31 restaurant reviews
common_n_restaurant_reviews_1bd8 20 helpful votes
5 of 5 stars Reviewed May 11, 2016 via mobile

This is my 2nd year going to this restaurant for mother's day and I love it. The food is so good, everything was fresh and they had a great variety of food from meat, to chicken to seafood (oysters too) and the dessert station was to die for. This is my place to go for mother's day. Make a reservation... More 

Thank Viri G

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Restaurant Details

Rating summary
  • Food
    4 of 5 stars
    4 of 5 stars
  • Value
    3.5 of 5 stars
    4 of 5 stars
Average prices
$50 - $70
American, Steakhouse, Seafood, Healthy
Breakfast, Lunch, Dinner, Late Night
Restaurant features
Reservations, Seating, Waitstaff, Parking Available, Wheelchair Accessible, Serves Alcohol, Full Bar
Dining Style
Casual Dining
Good for
Business meetings, Families with children, Romantic
Open Hours
6:00 am - 10:00 pm
6:00 am - 10:00 pm
6:00 am - 10:00 pm
6:00 am - 10:00 pm
6:00 am - 10:00 pm
7:00 am - 11:00 pm
7:00 am - 11:00 pm
Location and Contact Information
  • Address: 625 North Rd. Rte. 117, Groton, CT 06340
  • Location: United States  >  Connecticut (CT)  >  Groton
  • Phone Number: 8603260360
Located just outside Mystic, CT, Octagon prides itself on offering the finest steaks and freshest seafood everyday. Our menu changes seasonally and celebrates local ingredients harvested right here in our beautiful state of Connecticut. To our pleasure, our guests are travelers from around the globe and neighborhood locals. From our open grill and wine cellar to our one of a kind artwork and glass sculptures, we truly believe dining should be an experience, not just a meal.

Questions & Answers

Questions? Get answers from Octagon staff and past visitors.
Posting guidelines
Typical questions asked:
  • Do you have gluten-free options?
  • Is there a dress code?
  • Do you allow dogs on the outdoor patio?