I stayed for three weeks. This place is really situated in a prime location; well-connected to other parts of the city by public transportations, and very close to Tiergarten and a few other city attractions. Marco was friendly, very helpful and patient in explaining to me how everything works in the hotel and where to get essential supplies. He also helped me with contacting the airline to arrange for the delivery of my delayed baggages to the hotel while I just arrived Berlin for the first time and didn't have a German phone number. One could only imagine how much this kind of help meant to someone who felt desperate upon landing a foreign city without his luggages. I thank Marco very much for his help during my stay. I highly recommend this place to anyone who plan to visit Berlin for short or long stay.