I stayed at Boogaard's (pronounced like Humphrey "Bogart") for 6 nights in April/May 2007. I had selected it due to the rave reviews here on TripAdvisor and they all proved to be true.
Firstly, it's worth mentioning that Boogaard's & Sophia's is moving mid-year to an even better location, in a totally remodelled building designed specifically for B&B. This will give larger rooms, bathrooms and lounges but the same fantastic service. Therefore, I'll talk mostly about the features that will remain the same after the move.
The success of Boogaard's is due to Peter Boogaard, the Dutch-American owner and host. The quality is a sign of his personal standards... everything is immaculately clean, there are knick-knacks everywhere, it has a very 'homely' feel and the service is truly personal.
Some examples: I was going out on a bike trip, so Peter gave me some snack bars to throw in my bag. When I asked for the location of a laundry he said that Housekeeping will do it for free, and it appeared that afternoon neatly folded on my bed! I wanted to stay in touch with my family, so Peter provided a laptop with Internet connection.
I was fortunate to stay for six nights because I managed to sample the complete range of Peter's breakfasts... (1) Meats, cheeses & bread rolls, (2) Dutch pancakes with bacon, fruit, yoghurt & stroop, (3) quiche, (4) Bagels & smoked salmon. Plus, there's always cereals, spreads and, if you're lucky, his ultra-great Bread & Butter Pudding. (See pictures)
Not only is the accommodation price quite reasonable for Amsterdam, you get a free breakfast AND you're so full you don't have to buy lunch!! And if you're peckish in the evenings, there's some self-serve cake and drinks always available.
Peter gave great travel advice such as where to visit on certain days and the best transport options. I found that he was always right, too!
For example, I stayed during Queen's Day (30 April) -- the one day of the year when the whole of Amsterdam dresses up in orange, drinks heavily and basically goes crazy. Against Peter's advice, I rode my bike to nearby Vondel Park hoping for a pleasant ride, only to find such a crowd celebrating Queen's Day that I was lucky to walk my bike, let alone ride. I listened to him next time!
If you're planning on visiting the Aalsmeer Flower Auctions, the early morning bus leaves from nearby Boogaard's and you might be lucky enough to get back in time for a late breakfast!
Bottom line... As soon as you know you're visiting Amsterdam, book at Boogaard's because it fills up fast!