Martin was a great host!
The apartment is great and cosy. It's really clean and very practical, perfect for 4 people. Location is also great and the neighbourhood is nice and quiet and closed to everything you'd like to see in Berlin.
Martin was very helpful from the start, patiently answering all of my questions ;) and telling us everything we need to know to have a great trip. Communication with Martin was great, he was really flexible about time of our arrival.
I hope we can meet again someday in Berlin.
Cheers,
P.S. Good luck to your national team and Norwich City ;)