Alberto's apartment was exactly as described and was a great place to stay for all four of us.
It was very close to the trains. We found a very cheap cycle hire just around the corner on Warthestrasse at the café by the square. Rental was only 3 Euros a day! Most city bicycle rental was 12 Euros a day. We cycled almost everywhere because there is such a good network of cycle paths. We also had fun cycling up and down the Tempelhof runways! It is a beautiful park, with lots of skylarks singing. Also places to have a beer and watch the sunset.