1. This hotel is located on a very very busy street, trams stopping every ten minutes ringing their bells, cars and lorries drive resk fast, ambulances have their sirens on. Also: its badly isolated to neighboring rooms, you hear housekeeping early in the nornung, slamming doors and moving furniture, and you hear neighbours partying late at night - morning.
2.The rooms get extremely hot because of the sun and no air conditioning and since the street is so noisy (and sometimes smelly) opening the windows is also annoying and you just cannot relax.
Apart from that the location in Berlin is great, easy to get around, goid communications, goid supermarket, small shops and trendy restaurants nearby, also fast food, its a historically nteresting neighborhood just at the former Berlin war. Housekeeping was good. Breakfast was ok, with a great sweet homemade cake every day - and easy to get a table, also friendly efficient staff. The staff overall was friendly and good. The elevator was sometimes strange but worked.
But sorry to say, I would never recommend it.