1 Big Sustainable Island

Floating Island Retreat: Lakefront Cabin w/ Sauna

A unique nature stay for outdoor retreats on Annabessacook Lake in Monmouth, Maine — near Winthrop.

Quick Answer: Floating Island Retreat: Lakefront Cabin w/ Sauna is The Nautilus is a floating love letter to reinvention — a cabin, a tiny home, and a houseboat all rolled into one quietly wonderful idea. Moored beside 1 Big Sustainable Island, it lets you wake to gentle waves at your door, watch the sunrise from bed, and step straight onto a floating porch for morning coffee. It’s proof that with a little imagination (and a lot of care), something old can become something entirely new on Annabessacook Lake in Monmouth, Maine.

The Nautilus is a floating love letter to reinvention — a cabin, a tiny home, and a houseboat all rolled into one quietly wonderful idea. Moored beside 1 Big Sustainable Island, it lets you wake to gentle waves at your door, watch the sunrise from bed, and step straight onto a floating porch for morning coffee. It’s proof that with a little imagination (and a lot of care), something old can become something entirely new.

Guest Reviews from Revyoos — Showing 3 of 143 Reviews

Ali January 01 2018
1BSI is a slice of paradise
Rating: 5.0 / 5

1BSI is by far one of our favorite places to stay in the world. Beautiful, calm, disconnected, and convenient. Kent covers all the basics and makes the entire process extremely easy. Just pack your essentials and a good attitude! This is our second visit, but it definitely won’t be our last!

Casey& January 01 2018
The most relaxing and romantic weekend with my husband, thank you!!
Rating: 5.0 / 5

The Nautilus provided my husband and I the exact relaxing weekend I needed - away from the noise of our town, our kids, our dogs, and everything in between. It was just me and him loving the lake life and all the beautiful surroundings it had to offer. Our hosts offered such a wonderful experience, I recommend this to anyone and everyone looking to get away for a few days and enjoy getting back to your nature roots. 10/10!!! Thank you so much Kent & company for such a unique and beautiful experience.

BridgetB January 01 2018
Sweet, Simple, Summer Bliss
Rating: 5.0 / 5

We had the most amazing time staying at the Nautilus. Kent was a generous, knowledgeable, and enthusiastic host who made sure that we had everything we needed for a successful getaway. We were even able to check-in early and enjoy the Nautilus for a few bonus hours. We are so grateful! This summer has been a fast-paced and hectic one, and this trip offered us the opportunity to slow down, look around, and be totally present against the most beautiful natural backdrop. We swam, canoed, grilled, played lots of cards, and had the most special time. We will be back, most definitely!

Source: Revyoos.com

Nautilus Water House FAQs

What's special about the Nautilus Waterhouse?

The Nautilus is a floating waterhouse docked at the island - offering a unique on-the-water stay with stunning lake views and immediate access to swimming and paddling.

Is the Nautilus Waterhouse off-grid?

Yes. Like all 1BSI stays, the Nautilus is off-grid by design, using thoughtful systems that balance sustainability with comfort.

What's included in this stay?

A cozy sleeping space, cooking gear, hot shower/bathroom access on the island, firewood, canoe or kayak use, and access to a hammock swim dock, boat dock, and swimming spots.

How do I access the Nautilus Waterhouse?

You'll arrive on your front porch by boat.