Everything was as we expected after seeing the photos. It was actually cleaner than expected, which was a great bonus. It's an older, simple apartment, but it fully covered our needs for the week we stayed there.
Two separate bedrooms in a corridor was perfect for our family of four. The bedroom were real rooms with doors in a corridor. I mention this because that's not alway the case when renting vacation apartments. This worked well for our family of four. The kids had their own bedroom where we could close the door when they went to bed, and yet they were close enough during the night for them to feel safe walking over to us.
I was a bit worried about potential noice, being an apartment on the ground floor, but there were no grounds for that worry. The apartment had new, insulated windows facing the street and the street was also more quiet and calm than i had feared.
Free parking on the street is good. There were however a lot of parked car, even during the day. You may need to park in another street and then move your car closer if you want your car parked outside the apartment. We were in Berlin during a week when shools in Berlin had a holiday, i.e. more people at home + more tourists. This may have meant more cars parked in the street.
Superclose to the U-Bahn (station Leinestrasse on the U8 line). Three food stores (Aldi, Lidl, Edeka) within walking distance and a small bakery arund the corner for those breakfast Brötchen one must eat when in Germany. And this is Neukölln, not the fanciest of areas in Berlin, but with it's own charm and well worth experiencing.
Communication with our host was very good. Swift and nice answers.