We (3 girls) have stayed at Elena's apartment for 6 nights and we had a wonderful stay. The apartment has a great location very close to bus and U-bahn connections. It is very clean, modern and has everything one might need during a business trip or vacation. A fully equipped kitchen is in the apartment, perfect place to hang out with your roommates for a cup of tea or glass of wine. There are 2 bathrooms both very modern and clean. The furniture is basic however we never had the feeling that we would be missing something. Another big plus is the excellent internet connection and the friendly and fast communication with Elena.
I can only recommend this apartment.