We were blessed with the weather, but sitting on top of the boat watching the canal traffic glide by in the evenings is something you don't get on many holidays; it was amazing. Staying on a boat in Amsterdam feels like something special, almost decadent, and Kay's boat is like having the benefits of a boat with the feel of something more substantial. It isn't like a five star hotel, but it feels very authentic and it was a great space for our family of four. On two of the three nights we all slept more than nine hours - that's never happened before that I can remember. Comfortable beds, clearly. Also, as hot as it was, the boat has AC, which was amazing.
De Pijp is a great location - it's got a good energy and is away from the touristy parts, but close enough if you want to do that too, which we did. Lots of places to eat, and a fabulous market.
Finally, Kay is the best host. Friendly, quick to respond, good for local knowledge, good communication, a very nice chap. I can't recommend him enough.