The flat is great, and easily accommodates two and up to four people. It has the facilities you'll need and a quite charming interiour, though if you plan to frequent Amsterdam's city centre you'll have to take into account the 20-25 minute travel time by the nearby metro as well as its closing time at midnight.
Daan was a very friendly host and was quick to answer our messages. He also gave us the keys to the flat several hours before standard check-in, as well as providing us with a book of suggestions on where to eat, have coffee, enjoy the nightlife etc.