A great experience for a solo traveler! The staff was friendly and efficient, and the room was lovely, well furnished and not at all cramped despite it being a 1-person room. I appreciated there being a kettle since i was too cheap to pay (very little) extra for breakfast. However there was some dust on the "kitchenette tray" and utensils, and the used mug wasnt replaced with a clean one during room cleaning, which i was a tiny bit disappointed by. The walls were also quite thin - i was woken up by my upstairs neighbour's snoring and toilet use... but there were earplugs in the hotel room so i didnt mind, though i think that guy was in need of some medical attention. These are the only things i found could be improved upon, otherwise my stay was perfect and I'll be sure to come back the next time im in berlin.