We had a very good time at the flat. The location is amazing, bus and tube nearby, nice restaurants, bars and shops around.
The hosts were very nice and responsive.
Had difficulties check in as we had to pick up the keys in a crowded bar nearby were the waiters were not very helpful. On arrival at midnight the washing machine was still working which was a bit surprising at such a late time.
The curtains in the living room were broken so it was very light early in the morning.
Overall it was still a very enjoyable stay at this nicely decorated flat in Berlin :)