First of all, I spent almost 20 days at Patrik's place.
The location of the apartment was great. So close to S-Bahn station and U-Bahn station as well as Tiergarten. There are also supermarkets next to the apartment.
The cleanliness of the home and the room is also great and there is everything you can use to cook a meal or prepare something for yourself.
About Patrik, he is one of the coolest guys that I know and he was very helpful, kind and a great host. He also gave me some local tips which really made my life easier.
As you can understand, I totally recommend this place for everyone who wants a very pleasant stay in Berlin.