Ton's boat is in the perfect location, just a short walk from Amsterdam Central train station. It's docked in a quiet marina so we had no trouble sleeping. There were bike racks nearby for our rental bikes (we weren't sure there would be so this was great).
It is cosy (as you'd expect) and the beds weren't v comfy so 3 nights is the max I'd recommend but the boat did have a little fridge and a shower which were nice perks.
Ton was very helpful and we had all the info we needed before check in.
It's a novel, affordable way to stay bang in the centre. Definitely recommend!