Aglaja left really easy instructions for us to get the key and to let ourselves into the flat and also excellent instructions on how to reach the address directly from the airport.
We loved the stay, very comfortable beds, simple kitchen but perfect for us, very quiet neighbourhood. This was in a superb location to explore Historic Berlin, all within walking distance. The U-Bahn at Spittelmarkt was a couple of minutes walk away which was great if you wanted to go further afield.
Tip for those visiting here with an early morning flight-The Titanic Hotel opposite are willing to just call a taxi for you in the morning, it arrives in about 2 minutes and cost us 22 euros. (Public Transport had not started at 4.30 am!