While the guesthouse is not situated in the centre of Amsterdam, the reality is that it is within walking distance of the museum quarter, and the city centre is a short tram ride away.
What's great about the location is that you're not in the middle of the tourist area, so the chances of finding a restaurant where the locals eat is much better! We had some great eating & drinking experiences at the local pubs and restaurants.
The facilities were perfect: good sized rooms with great bedding, a kitchen with everything you need, free wifi (a huge bonus for the last minute research you want to do), and enough TV channels to keep most TV addicts satisfied.
Jasper was a great host that really looked after us and made sure we had everything we needed.
Just a word of caution: the rooms are up 3 flights of stairs (up a very narrow staircase), so be prepared to climb. Jasper was however quick to offer to carry our cases!
