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625 North Rd, Groton, CT 06340-3212
+1 860-326-0360
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  • Excellent47%
  • Very good25%
  • Average17%
  • Poor7%
  • Terrible4%
Travellers talk about
“steak” (61 reviews)
“salmon” (12 reviews)
Open Now
06:00 - 22:00All hours
American, Seafood, Healthy, Gluten Free Options, Vegetarian Friendly
625 North Rd, Groton, CT 06340-3212
All Details
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Reviews (248)
Traveller rating
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1 - 10 of 245 reviews

Reviewed 6 days ago via mobile

Had dinner my first night here because it's part of the Marriott hotel. The hotel is disappointing but the restaurant had great food and great service. It's very expensive and dinner with a glass of wine is an easy $80-$100 per person. Everything was prepared...More

Thank conradusa
Reviewed 3 weeks ago

Very large restaurant with no waiting and this hotel was packed the weekend we were there. Great waiter who knew the menu and had a nice personality. Had breakfast off the menu which was great. They offer a buffet as well and this was large...More

Thank Stormin1
Reviewed 10 July 2017

Marriott should be taken to task for their very poor breakfast buffet for which you are changed $13.00 each. The coffee was good. The joule watery, eggs barely audible and I took one bite of a piece of bacon and a sausage and they were...More

Thank patj0hn
Reviewed 3 May 2017

At the risk of sounding like a travel snob, hotel based restaurants are not usually my first choice. But the menu, price, service and quality were outstanding and what a nice "commute" back to the room! Our server said locals make the trip just eat...More

Thank JollyKO
Reviewed 25 April 2017

I was here for some drinks after work with a few co-workers. The bartenders are awesome here. They are so attentive to their patrons. I ended up getting a snack before dinner and had the lobster bisque at that time. It was PURE yum. I...More

Thank Pho N
Reviewed 12 April 2017

5-star restaurant indeed top notch food and service, waiters very helpful about ingredients in all foods and wine list. atmosphere very romantic great seen. All was excellently prepared and served one beast restaurants in New England hands down very well run front and back of...More

1  Thank Brian L
Reviewed 5 April 2017

Wonderful restaurant in all respects!! A tad pricey, but you really get what you pay for. Courteous staff. Timely meal service. Had their salmon dinner from the regular menu. Wonderful. Grilled vegetables were extremely tasty. Looking forward to returning. The small room off the main...More

Thank 468keith
Reviewed 30 March 2017 via mobile

Located inside the Mystic Marriott in Groton Connecticut, this in house diner is suited to meet the needs of any traveling patron. For those with a more refined palate, their steaks feature top quality Kobe beef and fillets that will melt in your mouth. The...More

Thank ReflectiveEscapes
Reviewed 15 March 2017

This restaurant is located inside the Marriott Hotel & Spa. We ate here three times over the weekend. Why did we eat here 3 times when the service was terrible??? We were at the hotel for a 3-day event and this is the only restaurant...More

1  Thank DonnaZJ
Reviewed 14 March 2017

A private b-day party in the "smoke room" was incredibly wonderful! Smoke room is NOT a smoking atmosphere but a non-see-through smoky glass. We were a party of 13 with appetizers, beverages and a choice of pre-fixe menu options. All entrees were delicious. The birthday...More

Thank carole c
Nearby Restaurants
Chester's Barbecue
202 reviews
3.01 km away
Spot Cafe & Restaurant
71 reviews
2.51 km away
Thai Sawasdee Authentic Thai Cuisine
49 reviews
2.99 km away
Nearby Attractions
Bluff Point State Park
152 reviews
4.35 km away
Historic Downtown Mystic
392 reviews
3.62 km away
Fort Griswold Battlefield State Park
83 reviews
4.68 km away
Outer Light Brewing Company
26 reviews
4.11 km away
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Restaurant Details

Rating summary
  • Food
  • Value
Average prices
USD 50 - USD 70
Dinner, Brunch, Breakfast, Lunch, After-hours
Restaurant features
Reservations, Seating, Waitstaff, Parking Available, Highchairs Available, Wheelchair Accessible, Serves Alcohol, Full Bar, Private Dining, Free Wifi
Dining Style
Casual Dining
Good for
Business meetings, Child-friendly, Romantic, Bar Scene, Local cuisine, Groups, Special Occasion Dining
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.
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