This apartment is in a great location, plenty of restaurants and grocery stores nearby and within minutes of several tram lines. The shower and water pressure was great. The neighborhood is relatively quiet except when there are a group of contractors with power tools working as was the case with us but only for a few days. There's plenty of natural light in the bedroom and there is a pleasant view out the window of the rooftops and city skyline.
There are 86 steps to reach the apartment, something to consider. The room is located on the same floor as the owners but there isn't a lock on the bedroom door. If you're from the Netherlands I'm guessing it's no big deal. It is to most travelers I believe, we want to feel safe and we like our privacy.
As to communication, it was fine up until the last few days. It was likely due to the fact that the owner was abroad on business. There was no urgency so it was fine.
If the price was more reasonable and the bed more comfortable then I would book it again.