My wife and I stayed here in late May 2013. The welcome from Greet was very warm and genuine and she gave us a lot of really useful information about things to see and do. This B&B has everything you will need, from wireless, to DVD's and games. It is very well finished and exceptionally clean and comfortable (as well as warm - we were there during a mini Ice Age). The breakfast supplied was more than adequate, in fact, it was overkill; we just couldn't get through it all. There were also noodles, biscuits and chocolates supplied so we actually saved a fortune on eating out. Of course, the highlight of the apartment is the mosaic mural work of which Greet is justifiably quite proud and makes for a different kind of shower experience. The location right on the canal is also very good - there are plenty of restaurants, cafes and shops around, and if you are arty, there are galleries nearby. We also found that if you are even mildly fit, walking all the way to the Central Train Station or the Red Light District was a pleasant exercise.
All in all, having such great accommodation made our whole Amsterdam experience less stressful. I can highly recommend Amphora and its hosts to any Amsterdam visitor.