Igor's apartment was located in a great part of town. Really close to everything you need metro/u-bahn shops and the cool nightlife.
I didn't meet Igor but he left the keys in a near by convenience store.
That apartment is clean and tidy and had everything needed for a pleasant stay.
As the apartment is at the back of the apartment block it doesn't get an awful lot of natural light but that wasn't an issue for me as I spent a lot of time out.
Particularly close to Berghain if you're into the clubbing nightlife.
Igor was in constant contact and quickly answered all my questions.
Highly recommended.
Thanks Igor!