I chose Wouter's place because of all of the good reviews, but unfortunately I cannot give him 5 stars. He was very easy to communicate with, let us check in early, and was really a very nice guy that gave us plenty of suggestions in Amsterdam, but his place was not great.
It definitely was not the worst place we've ever stayed in, but also not nearly the best. Cleanliness was really the main issue, but luckily we were only there to sleep. (Bed was comfy so that's a plus.) Also, we were only left with one roll of toilet paper for 3 days. So, had to go buy some.
Location wise: Seemed like more of a local area to us. If you want to be closer to the touristy spots stay elsewhere, but if you like the local feel than this is the place for you.
Value: Quite honestly, for the price we paid, if I knew the place looked like it did then I would've just stayed in a hostel.