We had a wonderful stay at Marian and Simon's basement for 2 nights whilst we were in town to watch the Amsterdam marathon. The two rooms (for 3 of us) were clean and the beds were extremely comfy! The neighbourhood is absolutely beautiful and Vondelpark is just at the end of the street. The house is also on one of the main tram lines meaning you can be in central Amsterdam in 10/15 minutes. Marian and Simon were extremely welcoming and always available to answer any questions/queries we may have and recommended a great little place for dinner. I would definitely stay here again!