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Certificate of Excellence
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625 North Rd, Groton, CT 06340-3212
+1 860-326-0360
07:00 - 23:00
Closed now
All hours
Sun - Thu 06:00 - 22:00
Fri - Sat 07:00 - 23:00
More Info
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231 Reviews from our TripAdvisor Community

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Showing 228: English reviews
Level Contributor
46 reviews
33 restaurant reviews
common_n_restaurant_reviews_1bd8 12 helpful votes
4 of 5 bubbles Reviewed 3 weeks ago

Had breakfast buffet here in Sept after staying overnight. Staff was great especially the chef in the buffet area. The rest of the property isn't as good. Our October visit wasn't as good.

Thank Tom F
1 review
5 of 5 bubbles Reviewed 3 weeks ago via mobile

My new husband and I were gifted dinner here for the first night of our honeymoon in Mystic, CT. From the minute we walked in we were treated like royalty, and in looking around that was how every guest was being treated. Our server Angela could not have been more amazing and accommodating and at the end of the meal... More 

Thank Abby S
Medford, NY
Level Contributor
14 reviews
6 restaurant reviews
common_n_restaurant_reviews_1bd8 7 helpful votes
3 of 5 bubbles Reviewed 20 October 2016

Service and ambiance was good. I enjoyed my wedge salad. The bread served with olive tapenade and butter was nice. Now being that this is a steakhouse, I figured I would splurge on the ribeye. Unfortunately, my friend and I were both disappointed in our steaks. They were not tender at all. Another dinner companion had gotten the lamb dish... More 

Thank Therese M
Stony Brook, New York
1 review
3 of 5 bubbles Reviewed 8 October 2016 via mobile

Given the location and price I expected a more appealing decor with great food. What you get is a noisy, cafeteria layout eatery. The food was not much to rave about. I had duck and my wife had scallops. The scallops were gritty with sand. The duck was ok at best, and my French onion soup was best part of... More 

Thank Michael N
Level Contributor
35 reviews
14 restaurant reviews
common_n_restaurant_reviews_1bd8 14 helpful votes
4 of 5 bubbles Reviewed 25 September 2016 via mobile

My husband and we're staying at the Marriott in Groton and wanted to get dinner before we checked in. We had been to the highest rated restaurant last year and were not impressed. Then we remembered the restaurant in the hotel which wasn't then listed at all on trip advisor. The meal was fantastic, service perfect, it wasn't crowded or... More 

Thank Masweets
Nashua, New Hampshire
Level Contributor
163 reviews
70 restaurant reviews
common_n_restaurant_reviews_1bd8 110 helpful votes
4 of 5 bubbles Reviewed 11 September 2016 via mobile

The food here was extremely good. In fact we also ate at one of the high-end steakhouse is at the casino and the quality of this food it was far better. The service was fantastic. This is located in the hotel or to the hotel, it really needs an update on decor and furniture.

1 Thank Christine S
Avon, Connecticut
Level Contributor
628 reviews
375 restaurant reviews
common_n_restaurant_reviews_1bd8 260 helpful votes
2 of 5 bubbles Reviewed 8 September 2016

Several folks had told us about the excellent food at Octagon, so we decided to drop by for drinks and appetizers to check it out. Our cilantro lime fried calamari with aioli was inedible . . . tough, tough, tough calamari, though with a nice flavor, served with avocado chunks which could have used an additional three days to ripen.... More 

Thank Linda K
1 review
4 of 5 bubbles Reviewed 31 August 2016 via mobile

It was nice ,everything tasted good especially the lobster bisque,and the server was very efficient,on the other hand we were the only people in there for that night,lol

Thank Samantha C
Level Contributor
72 reviews
51 restaurant reviews
common_n_restaurant_reviews_1bd8 9 helpful votes
4 of 5 bubbles Reviewed 28 August 2016 via mobile

Service was outstanding but my chili was beyond to Spicey and the tuna tacos were mediocre at best. First bad meal we have had bit it is overpriced as always.

Thank croberto20
Level Contributor
54 reviews
24 restaurant reviews
common_n_restaurant_reviews_1bd8 10 helpful votes
4 of 5 bubbles Reviewed 23 August 2016

food at the buffet was good, but not an impressive spread for the $$. A little disappointing compared to the hotel overall.

1 Thank Philip C

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Restaurant Details

Rating summary
  • Food
    4 of 5 bubbles
    4 of 5 bubbles
  • Value
    3.5 of 5 bubbles
    4 of 5 bubbles
Average prices
US$50 - US$70
American, Steakhouse, Seafood, Healthy, Gluten Free Options
Brunch, Breakfast, Lunch, Dinner, After-hours
Restaurant features
Reservations, Seating, Waitstaff, Parking Available, Wheelchair Accessible, Serves Alcohol, Full Bar, Private Dining, Highchairs Available, Free Wifi
Dining Style
Casual Dining
Good for
Special Occasion Dining, Groups, Child-friendly, Local cuisine, Business meetings, Romantic
Open Hours
06:00 - 22:00
06:00 - 22:00
06:00 - 22:00
06:00 - 22:00
06:00 - 22:00
07:00 - 23:00
07:00 - 23:00
Location and Contact Information
  • Address: 625 North Rd, Groton, CT 06340-3212
  • Location: United States  >  Connecticut (CT)  >  Groton
  • Phone Number: +1 860-326-0360
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?