Detlef's apartment is very cute and is a great space to relax after being out around Berlin. The kitchen is well equipped. The living room has a nice large tv. The bed is comfortable. There is lots of storage space and plenty of hangers for your clothing.
The location is great and the neighborhood it's quiet and safe. There are convenient connections to several transit options are less than 10 minutes away. The nearby Rewe grocery store is large and has anything you might want. For fitness it's a beautiful walk or run down along the Spree it through the grounds of Charlottenburg Schloss.
The building is nice and cool on hot summer days, which was wonderful since there was a heat wave while we were there. While the building is generally very quiet, one neighbor does keep late hours, coming home and cooking dinner past midnight. Another neighbor has a newborn baby which you might hear faintly at night. Neither is a problem with earplugs, but could be a bother if you're a light sleeper who dislikes earplugs.
Check-in was easy and Detlef was very quick at responding to any questions or issues.
The internet connection is DSL with speeds of 10–13 Mbps down, 0.4–1.0 Mbps up with 802.11g wifi LAN. Fast enough for browsing the internet and video, but with an occasional buffering hiccups while streaming HD. However, uploads are quite slow.