This is a great, unique experience, one which will not disappoint. Their location is excellent, allowing for reasonable walks to many great attractions and transportation (including Central Station). The space is definitely one-of-a-kind. And there is no 'rocking the boat'; rock solid accommodation. We were there in November with the temperature just above freezing and can attest to the fact that the place is warm and cozy.
FYI: Just so you know, the unit is actually one-half of the vessel - the bow portion. The stern half is occupied...not that this made any difference because things were super quiet.