Marco's Houseboat is in a really good spot, away from the crowds but only a five to ten minute walk from the tram at Waterloo or Weesperplein and a half hour walk from central station. Its beautiful to wake up on the water and hear the birds, especially the swans who stopped by on our first morning. Not sure what is healthy to feed them anything or even if it's OK to do that, but they seemed miffed not to get a hand-out of some kind!
The houseboat has very modern facilities including a big-screen TV that rises out of a cupboard in the lounge James Bond style. The bed is fantastically comfortable and the kitchen has absolutely everything you could need in the way of cooking equipment, even a five-ring gas stove. We were a bit too stupid to work out the fireplace at first, but got the hang of it eventually. After that the lounge was toasty.
Didn't check out too many of the local eating places but Beans & Bagels further down Niewe Prinsengracht is worth a short walk for breakfast and lunch (great salads and decent coffee). Marco was full of information and quick to respond to questions. We'd go back :-)