We were 6 friends staying in the houseboat and we had a very good experience. Two of my friends arrived earlier and Brigit kindly welcomed them for the check-in, providing info about the house and the neighbourhood.
The boat is cosy, spacious, furnished with taste and equipped with anything you may need. The main floor with the living has a lot of light and a nice view.
It's not so close to the city center but there's a bus stop on the road just outside the boat (convenient both for the center and the airport). We even walked to Tivoli once, along the channels.
Just a couple of downsides.
Hot water is enough for 3 consecutive quick showers, then you have to wait for a while. But it wasn't a big issue, you just need to organize shifts :)
Also, the bathroom drain system is quite loud and it's in the under floor (the one with the bedrooms) so it can be a bit annoying if someone uses the toilet/shower while others are sleeping... but it was a good wake up call in the morning for the lazy ones ;-)