My apartment is very close to Zoologischer Garten, Schloss Charlottenburg, Kurfürstendamm. You'll love my apartment because of the quite neighborhood, great public transport access to the most important subway lines, yummy food just one street away, direct bus connection to Tegel Airport, Spree is just 6 minutes walking away including a nice bridge to watch the sunset. The apartment is great for couples or single traveller.
My guests will be able to contact me whenever they need something. I'll give advises and recommendations for their stay if they want :)