My boyfriend and I spent one night in Ruben's room and it was perfect. The room looks exactly as on the pictures, is clean and big and I love that map on the wall. :)
Also, the bathroom is clean and bigger than I expected in a small Amsterdam house. In the kitchen you will find a fancy water boiler with light and a fridge you can co-use. In the neighborhood there is a big market every day and lots of small shops and restaurants. Walking into the center is no problem but you can also take the tram or metro.
Ruben himself is very nice and friendly. He provided us with guides of Amsterdam and gave tips for our further travels. I can only recommend this room!