We spent two nights in Sunhead of 1617 at the beginning of april 2014. It's so close to central station and to everything you would like to see in Amsterdam; you can consider just walk everywhere.
Sunhead it's friendly and Carlos it's a great host. Breakfast it's delicious; you have to ask nothing because Carlos cooks everything you would need and serve it.
It seems to be at home, but you are in a real Amsterdam house dated 1617; narrow and with steep stairs!
We had The Narcissus room; upper floor; under a great wooden roof. Clean and with confortable bathroom. Not facing the canal but quiet.