My girlfriend and I really enjoyed the majority of our stay at Jill and Volkers, However I need to make it clear that we felt the hosts were very rude and somewhat manipulative.
The day before we flew the berlin we recieved a message asking us if we would mind if they stqyed in the flat on the last night as they had made a mistake with their holiday, we declined as we had wanted to have some space and privacy on our last night before we flew home and we had payed for an entire place.
To our shock they disregarded everything and still went along to arrive back in the flat on our final night and we definitly felt that we were not in an 'entire flat' at all anymore with the thin walls and having to wait around for half an hour to use the bathroom. And they changed the check out time to 5 hours earlier, so the ending wasnt so nice.. One last thing was the fact that they left a very tiny, thin single sized duvet cover for us on the double bed so it was cold at night and we didnt sleep so well.
Apart from this the stay was nice, super cool appartment in a great area and the cats were the best. Its sad as Jill had seemed really lovely from the beginning and we were full of anticipation for the trip but we left their appartment with a bad taste. But Berlin is a beyond amazing city that goes further than nice appartments..