Diamond's Edge Restaurant and Marina

Portland, ME · Restaurant

Rating
4.3/5
★★★★☆ 4.3
Reviews
20
Rank in Portland
#187
of 393 restaurants
City Percentile
31%
rating percentile
Address
Diamond's Edge Restaurant and Marina, 279 Diamond Ave, Portland, ME 04109
Phone
(207) 766-5850
Website
diamondsedgerestaurantandmarina.com

Diamond's Edge Restaurant and Marina is a restaurant located in Portland, ME. It is one of 393 restaurants listed in Portland. Its 4.3-star rating is slightly below the Portland city average of 4.4 stars. There are 10 photos associated with this location.

About Diamond's Edge Restaurant and Marina

With a brief and scenic boat ride from downtown Portland you are transported from the hustle and bustle of Portland’s Old Port district through the sparkling waters of Casco Bay to peaceful Great Diamond Island. Diamond’s Edge Restaurant is situated... More

Customer Reviews

★★★★★ 5.0 Mallory Nightingale · Jan 2026

If you’re considering The Inn at Diamond Cove as your wedding venue — book it. We had a 200+ person wedding with a lot of moving pieces, detailed logistics, transportation planning, and a full weekend of events — and the team at Diamond Cove absolutely delivered from start to finish. From the very beginning, they were professional, responsive, and truly invested in making sure everything went smoothly. We weren’t planning a simple “show up and get married” day — our wedding involved a ton of coordination, and their willingness to work with us on the details made a massive difference in our overall experience. We did a full buyout of the inn, and it was hands-down one of the best decisions we made for our wedding weekend. It gave the entire event a private, elevated feel — like we had our

★★★★★ 5.0 Maria P · Dec 2025

Choosing Great Diamond Island for our wedding was the best choice we could've made!! Colleen and her team were so wonderful, communicative, and helpful from the first time we reached out. They answered all of our (many many) questions quickly, were extremely flexible in ensuring all the details fit our wants and needs, and overall made planning feel low-stress and so exciting. From the tasting weekend to the wedding weekend, we felt so welcome and taken care of. The Inn, restaurant, and wedding staff truly helped us make it our dream day and provided an absolutely incredible experience for our guests.

★★★★☆ 4.0 Ashley S · Aug 2025

We learned about this place on vacation from another restaurant owner. It was a short ferry ride to get here from Portland. The view it self is worth it! The service could have been a little better- mostly younger kids working during the summer. But, the drinks and food were amazing! My husband had a lobster with clams- so good and fresh. I had a spicy linguine with clams and mussels- it was so good! The clam chowder was also, very good. Highly recommend coming out to diamond cove, having lunch and exploring the fort. Very cool piece of history.

★★★★★ 5.0 Claire Murray Flythe · Dec 2025

Our wedding experience with Colleen and the rest of the team at Diamond’s Edge / Inn at Diamond Cove was so wonderful from start to finish! Months later, guests are still telling us how special and unique the whole experience of attending a wedding on an island felt and the team at the venue was such a huge part of that! The inn was the perfect place to get ready, so calm, beautiful, and such a lovely environment for the bridal party as a way to set the tone for the day! The team was incredibly helpful with logistics on the day of, including shuttling us to and from the dock and wedding tent, which made the day feel smooth and stress-free. In the months and weeks leading up to the wedding, the team was so supportive in helping us coordinate details and bring items over to the island as o

★★★★★ 5.0 Bill Covert · Sep 2024

Super romantic and beautiful setting right on Casco Bay out on great diamond Island. Our waitress, MARIA was from Romania and spoke multiple language with ease. Wonderful service, wonderful food, and of course we had wonderful company dining out with four of us. I did not take pictures during the night, but here are a couple of the view we saw the next day. I am bringing our team Seacoast Roofing Of NH out here for a fall retreat. Darn it… I didn’t get any pictures of our table and how our view looked. But here are some pictures I took from the island.

Accessibility & Amenities

✓ Wheelchair Accessible Entrance ✓ Wheelchair Accessible Restroom ✓ Wheelchair Accessible Seating

Services

RestaurantSeafood restaurant

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This listing is informational. Contact the business directly to verify credentials, services, and availability.