I should have done this months ago, but just never got round to it. We stayed at Heren's extension, Maes B&B, in March 2009 for three nights, and we had a great time. Our room was more like a little suite with an enormous bathroom on the top floor. The bed was one of the most comfortable that we have ever slept in at any hotel or B&B. Breakfast was a great start to the day with an incredibly choice & only the nicest things. It was fun to share the kitchen table with other guests and have some nice conversation before starting our day. The owners and staff were very nice and helpful, and we fell in love with the little Italian restaurant that they recommended.
Personally, I think that the part of Amsterdam that the B&B is located in is one of the nicest and quietest to be staying as a tourist, and very close to all the main attractions and the city centre. Also, we did check the general price level for accommodation in Amsterdam, and Heren B&B is very much in the (lower) average, while providing a truly excellent service. Next time we need a place to stay in Amsterdam, they will definitely be our first choice!
This review is the subjective opinion of a TripAdvisor member and not of TripAdvisor LLC