We stayed for 10 days in Joop's place and it was really nice. You do need to read his description carefully so you do understand that there is no real kitchen and that you have to cross the hallway to get there. That is as well where the bathroom is (small but fine)
The kitchen is enough to make coffee, tea and a sandwich but that is it. We didn't cross with anyone in the hallway during our stay but it is a of a hassle if you need to go in the middle of the night.
Yes the door can be a bit hard to open but it works fine if you press down on the handle (the door can get stuck at the top).
The apartment is clean, the beds are comfy and it is easy to heat the apartment. Perhaps you need to get used to the Dutch culture of having your curtains open :-)
The neighborhood is amazing, one of the best in Amsterdam. Loads of bars and nice restaurants just 2-5 minutes away. The street is pretty quiet actually. There is a good supermarket at the corner of the street and some very nice breakfast places close by.