A really special and stylish place to stay at ! At least for us, it was the first time staying at a floating accommodation and we slept pretty good! It is not only a floating boat, but a smartHome as well. So you need to get used to the idea turning the lights on and of with an ipad :)
The place is nice for a romantic couple trip, not for a group of people, the shower is located in the only bedroom.
The area around is quiet and peaceful. After a day walking around Praque, and being sourrounded by thousands of people, it may just be right to finish the day with a glass of wine on the floating terrace. I doubt that it is the right place for a party weekend.
The walking distance to the city center is more than a half hour, but if you find one of that fancy electro scooters (staying around in Praque) you make it in 10 minutes.