The place is completely incredible and out of time. We had a very pleasant stay!
The apartment is very clean, unusual, very well decorated and very practical because there is everything you need. The center of Rotterdam is only 10min away by foot across the bridge, which makes the location very central. This is an excellent point!
We were 4 in the renting and it was enough for 1 night, on the other hand if you intend to stay more, it could be a little too narrow.
Be careful if you are seasick, the boat rocks and it can be a problem for sensitive people.