I liked Heidi’s house. My family of six stayed here for a couple of nights. The place is huge, with three living levels. It also has a nice rooftop deck where you can enjoy a drink and take in the great Amsterdam air. It is in a terrific location, a ten minute walk from the main train station, Amsterdam Centraal, and very convenient to Dam Square.
One caution that people should know about, however, is that the staircases — and there are four of them, not including the one to the roof, because there is no living space in the ground floor — are VERY steep, and have a 90-degree turn at the top. That means there are parts of each stair at the top that are very small, as with a spiral staircase. My sister and husband, who are both in their 60s, definitely struggled with the stairs. I had to carry their luggage up the four flights for them, because the largest bedroom is on the top most floor.
That being said, Heidi’s house may be like every other house in Amsterdam for all I know, because so many of the buildings there are tall, and similar in design. It was not really any sort of deal breaker for me, but if you are older and may struggle with many stairs and luggage, it is something to think about.