Head's up: This is a boat! A little boat! Not a cruise ship. Not a hotel room! Some people will enjoy it (like me) and some people won't.
Do not book this place if you are a light sleeper; it is right next to bars that are open late, and the music will keep you up even if you have earplugs in. I am not a light sleeper and I slept great. The rocking motion is very soothing.
Other downsides: the toilet is teeny tiny, be aware!
The location is great if you want to be near downtown Providence! Everything is in walking distance.
Our host clearly cared a lot about making sure we had a good time. He put effort into explaining everything for us and giving us extra options.