A friend and I stayed with Wat and Miguel for 2 nights and were delighted with their home. It's a beautiful space, very bright with all kinds of plants everywhere. The bed was very comfortable and they have a great bathroom and shower. The neighborhood was one we probably wouldn't have experienced if we weren't staying with Wat, but we loved it! It's very residential and seems to give a good sense of what Amsterdam is really like for the locals, outside of the tourist center but still very close to any of the main sites you want to see. Plus so many great restaurants, cafes, and bars right around the corner. Wat was a lovely host and very helpful and easy to communicate through the whole process leading up to our stay.
The only word of caution I would offer is that if you are a very light sleeper you should be aware that on weekend nights in particular you can hear the activity from the nightlife down the street, but as the bedroom is on the very top floor of the building it's not that bad, and the late night spots in the area are only cafes so the noises are only of people talking (not clubs with loud music etc.).
Overall I would absolutely recommend staying here and I hope that I have the opportunity to return to Amsterdam and stay here again!