I loved Charlottes place! It was beautiful, far more space than I knew what to do with... especially for someone traveling alone. It was clean, comfortable, warm and truly felt like a home away from home.
Charlotte was almost instant in her responses and accommodated me when my flight/arrival was way delayed!
The apartment is smack in between two metro stations(innsbrucker/friednau) making transportation to the more central areas or Berlin incredibly quick and easy.
I would definitely stay again!