Ben and Simon's apartment is one of the nicest and cleanest apartments we've stayed in this trip! It looked exactly like the pictures, the beds were extremely comfortable and there was plenty of room for the 5 of us. The apartment was close to public transport and easy to get to the centre of Berlin as well as the airports.
Ben and Simon were really lovely and allowed us to store our luggage with them after we'd checked out which was very helpful.
The only minor problem we had was that the shower didn't drain well which led to a lot of water in the bathroom but we worked around this.
Overall a lovely stay and would highly recommend!