Pros (+) Appearance looks higher end and being furbished and maintained by people with and eye for detail. Beds are excellent and if you're at one of the higher floors you have an excellent view over Easter Berlin and it's DDR-architecture. Public transport connections are great both day and night. Shower and bathtub tab was broken. They fixed it super fast.
Cons (-) WiFi on the 8th floor was absolutely horrible. The €5 I payed for it were refunded after I complained about it. Bathroom smelled a little funny. One of the drains gave a sewer smell. Breakfast was not included.