There were good and bad things. I would recommend this apartment mainly for its location - lots of nice restaurants, cafes and bars around, only 10-minute walk to S-Bahn, a tram and bus stop just around the corner. It's calm and quiet at night. The communication with the owners was ok, check-in easy and fast.
However, the cleaning was bad. Although you pay for it, it looks like the only thing done is the change of towels and sheets (one of them actually had stains that possibly didn't come off after the washing but still... ), there were quite spectacular spider webs hanging from the ceiling or covering the whole lamps. For sure they didn't use vacuum cleaner at all because almost everywhere there were lots of dust bunnies. The walls in one of the bedrooms were also covered in some stains. The shower doors didn't close, there were dirty mugs and cutlery and I could go on and on naming other things.
All in all, it's on OK place if you want to spend there a few days but don't expect too much.