Jeroen is a very nice guy and we enjoyed staying with him during the 6 nights we were there.
The place is as it looks in the picture and it is very clean, with everything including TV, amazing books and a little fridge.
The neighbourhood is not the best, but it is perfect for the price, and it is also 12-15mins by bus to Amsterdam central station.
Jeroen himself also lives in the same building and he is always accessible in case of problems. For instance, we wanted an extra set of keys for the house and he provided us with that swiftly.
However, it is worth mentioning that the room is cold(at least for my standard, and during autumn and winter) and there is a heater which is off mostly. We contacted Jeroen because of this problem repetitively but each time he turned it on for a little period and then it was off again. This was the only negative point that I had to mention.