A friend and I spend 5 lovely nights at Reuben and Jelaterinas appartment. They were helpful and quick to respond to questions about how to turn on the heat, and the formular required to use the wifi. The kitchen is not the most weel equiped to cook a nice dinner, but the most basic necesseties are there. The bathtub is the bathroom is really nice.
The area is really nice with lots of little café. The appartment it is well connected to the tube network and easily accessible from both Tegel and Schönefeld airport.