The houseboat is really unique, with a lot of design furniture. Therefore, I recommend the boat, especially for design enthusiasts.
It was really clean when we arrived, and there were two separate toilets and one shower. The spaces were well decorated.
The location is really quiet, with a river view. We visited the houseboat at the end of October and the only thing we were sad about was that the weather was so cold that we weren't able to enjoy the cosy terrace that much. In the summer the terrace would be the best one in Prague!
The location is about 12-15mins away with a taxi, Bolt ride costs about 200-250kc.