I had a great time in Patrick's place in Berlin.
The location is relatively central, with plenty of great cafes nearby (Cafe Pony, Daddy's Cafe etc) for breakfast, before a short walk to the train to commute around Berlin.
The flat itself was lovely, especially the bathroom though was missing a few small features like a bin in the bathroom, an oven or any toilet roll/towel holders in the bathrooms. However, these were very minor issues and did not detract from the experience.
While we did not use them, Patrick providing bikes for us was an excellent feature. Berlin is very bike-friendly and it would make travelling around even easier if it was not freezing!
Overall me and my friends had a great time and I'd recommend this place to anyone that wants to explore Berlin.