The good: location. Five minute walk from the old city sights. Also the price was rather attractive.
The meh: fifth floor with no elevator. This should really be mentioned explicitly in the ad. If you are traveling with kids and/or a lot of luggage, just be prepared.
The (really) bad: The beds were just horrendous. Cheap mattresses are to be expected, but the actually broken mattress support are not (I did take a picture).
Next, although the apartment is listed as non-smoking, all the bed sheets and towels reeked of cigarette smoke.
Add to that 12(!) missing or dead lights, heaps of dust under the beds, and little things like a tea kettle that doesn’t open, and you get the picture.
Funny thing is, the apartment has obviously seen much better days. It does look like it’s been well renovated a few years ago, but has been barely maintained since then.