The boat is fine however the location is dreadful. The shower and head is tiny. We found it incredibly noisy at night and would not recommend anyone stay there unless they want to party most of the night. I am sure many do want to do that but I did not.
It is a decent 15 minute walk to get to the natural sciences museum and it was very difficult getting taxis. We would call and they would not turn up. It is not central to Barcelona.
The hosts were nice enough and have tried to make the boat comfortable but I would never stay there again I am afraid unless the boat was at a different mariner.