Although Christian could not meet us he arranged everything for our arrival and there was no problem with entering the apt. or getting the keys. We were in continuous e-mail contact and all questions / problems were dealt with promptly. The apt. is spacious and well located in an area of the city that is undergoing massive renovation.
We particularly enjoyed this area of the city. It is about a 20 to 30 minute walk from the "center of action" but quiet an it has it's own very nice shopping/restaurant area blocks away.