I stayed at Garrelt's place for 2 days during my official visit to Berlin. The check-in was very informative, Garrelt told me the exact location from the station the day before. Then the room was very beautifully set up too and everything in the house was very clean. The next morning, we had a brief chat before I left for work and then the following morning too we spoke a bit. Garellt is a very happy and joyful person, and is always ready to help you with everything you need. I will definitely recommend his place :)