We had a great time in this apartment and in Neukölln. Jekaterina was communicative, although we didn't get to meet her in person. In the information we got it said we could check in at 1 pm, and should check out at 4 pm. This was a mistake - it was the other way around, so the doorcode didn't work. But Jekaterina opened the door from a distance, so that worked out fine. The apartment itself looks like it does on the pictures, although a little older. There is a tv on the pics, but not in the apartment. When we arrived, there was laundry hanging out to dry - it was in the way (in front of the bathroom door) so we had to fold it. Of course it's not a big deal to fold some sheets and towels, but when you arrive for a (short) holiday in an airbnb apartment it's not something you especially like to do :-)
The kitchen is very well equipped and the bathroom has a very nice tub, but there is no place to put the shower, so while showering you have to hold it in your hand, which makes it almost impossible not to spill tons of water on the bathroom floor. We had to mop the floor two times. Also not the biggest deal.
What kind of was a big deal, is that the towels smelled VERY bad. Luckily I brought my own towel, because this was really not right (as if they where left in the washer for to long or put away while still wet or something).
This apartment wasn't bad, but for the same price I think it's possible to get a place in Berlin with a little bit more personal attention put into it.