Myself and my wife came to this place to start off our honeymoon and loved every last second of it!
Lianne was one of the best and most attentive hosts i have come across and did everything in her power to make our stay as positive as could be.
The place is really beautifully furnished and is in a lovely quiet area of the city. The tram goes straight from Centraal Station every few minutes and drops you off only a 5 minute walk from the houseboat.
One thing to keep in mind however, the very slight rocking of the boat on the water will give you what I've named, "the phantom wobbles" for a few days to come. Nothing too bad at all, but those that haven't their sea legs may notice more than others.
Otherwise, I would thoroughly recommend this place to anyone!