Bonnie Castle Resort & Marina

About The Hotel

The Bonnie Castle Resort & Marina at 31 Holland Street is a 3.5-rated (1,203 reviews) riverfront resort on the St. Lawrence River in Alexandria Bay, with a pool, a marina, river frontage, and event facilities near Boldt Castle and the Thousand Islands boat tours. A scenic, amenity-rich river base, though the 3.5 rating reflects mixed feedback on rooms and upkeep — read recent reviews before booking. The pool and the waterfront are the water features, with a jetted-tub room a category to confirm at booking. Some guests report romantic sunset experiences and friendly service; others note dated decor. Best for travelers and couples who want a riverfront resort with castle-tour access and river views, with careful review of current property conditions.

What Guests Are Saying

“It was our third anniversary and we decided to jump on our trike and venture north towards the 1000 island region. We decided to seek lodging at Bonnie Castle. We not only obtained a room, we took a jacuzzi suite. What a comfortable enjoyable stay we had. The staff was so friendly and accommodating, especially the front desk and dining room staff. We look forward to another stay I. The not so distant future” — Tony S., 4 stars

“This was a mother-daughter birthday trip for my mom. We enjoyed the Two Nations Tour out of Clayton, NY. We got to The Bonnie Castle Resort & Mariana in time to see the sunset in front of the hotel. This was our favorite part of the property. The staff were very friendly. They offered to have someone lug our suitcases up the stairs since there is no elevator. We had an ok view with a small balcony. The parking lot is between the buildings, so we mainly saw the parking lot and cars. Our room was clean, but my bed made loud screeching noises on one side, so I had to be sure to sleep on the other half of the bed so that I wouldn’t wake my mom every time I moved or got out of bed. I slept well on the other side of the bed with no problem. The bathroom was small, but my biggest issue was the tub. It was obvious that it had been fixed a few times, but when I stepped into the middle of the tub, I didn’t feel secure. It was soft, and I felt like maybe I might fall through it. The hairdryer wouldn’t work, so I left the hotel with partially wet hair and left it to air-dry. No breakfast available, but they have a sitting area where you can use the toaster, microwave, etc. Positive - the location is great and the staff were friendly. Negative - outdated and needs to be updated for the prices they charge. No breakfast.” — Michelle O., 3 stars

“Place is dated. Smell of mold in halls. We got one of the suites that had a balcony to the indoor pool. That was nice. Pool closed at 9. Wish they would have left the pool open for an extra hour for the suite rooms only. After all, we do pay extra. We sat out of the deck facing Boldt Castle. We watched the boats, ships, other watercraft. It was so peaceful. Just us on that big deck. We were there off season, Sept. We ate in the restaurant. Place is dated in decor. There is a night club in the restaurant that was starting to get busy so we left. Room was dated. Outdated tub with mirrors all around. Cute little “bar” area. Would be nice if resort had a pamphlet in room that gives some highlights of the town, places to eat, tours, etc.” — D S., 3 stars

Pros & Cons

Pros:

• A scenic St. Lawrence riverfront setting with water and castle views
• A pool, marina, and river frontage for relaxation and boating
• Near Boldt Castle and the Thousand Islands boat-tour docks
• Event and wedding facilities on the property
• A well-located amenity-rich river resort

Cons:

• A 3.5 rating reflects mixed feedback on rooms and upkeep — read recent reviews
• A large resort rather than an intimate, boutique stay
• A jetted-tub room is a specific room type — confirm at booking; the pool is the shared amenity
• Mostly a seasonal, summer-focused destination (Boldt Castle May–October)

The Location

On the St. Lawrence riverfront in Alexandria Bay, near Boldt Castle and the boat-tour docks. You can find more details or book your stay on TripAdvisor.