Edwin was a great host! The room for one person (which could easily be shared by two as well) is very comfortable. Of course - as to expect in a house in one of the smaller streets in Amsterdam - it is not huge, but definitely big enough to accommodate one person and fulfill all needs. Edwin even provided towels! The bathroom, which is shared with other guests, was always very clean.
The location itself is right by the flower market and you can easily walk to a lot of the sights or just wander through the canals. If you're not into walking the tram station close by brings you to a lot of other great places. With streets such as Spui and Spuistraat close by you are not only close to museums but also great restaurants and bars. At night it can be loud and the street lantern can shine into your room if you don't use the curtains (I didn't because I like waking up to sunlight), but if that doesn't bother you and you're not a light sleeper, traveling by yourself and willing to explore the city, this is a great location for you. I had a good time and would definitely recommend Edwin's place!