We stayed for 3 nights at the hotel, first thing we want to mention is that the people at the desk were super nice and helpful. The Fruhstuck was great and had a lot of variety, but the tables were always full or dirty after being used. Don't seat outside on the terrace, as it may take a long time for a waiter to notice you.
All in all, the hotel is great and the metro stop is the only thing positive about the location. You can walk to potsdamer platz but it will take a good 15 minutes. The room had a constant sewage smell to it, if we left the bathroom door open.
The maid would just come barging in the room at 8 AM to clean... We were on holiday so we wanted to sleep in, but it was not possible. The desk apologised for it and made the comment on our behalf.
Attention is great
Service is really good
Breakfast is good
Complimentary water in the rooms was great!
Hygiene is low, location is not the best, and they could use an update or some renovations.