We recently spent 10 days at this NH hotel in the Charlottenberg area of Berlin. We have stayed previously in other NH hotels in Spain and Belgium. The location was perfect - close to Kufursterdamm shopping, U-Bahn and S-Bahn stations and lots of restaurants. Price was very good via a Priceline.com airfare/hotel package. Staff was fairly friendly. The downsides were: room was too warm even with the HVAC in "off" position (there was no A/C), which necessitated opening the window to the high level of street noise. Particularly irritating were the partying drunks on Sat night/Sun morning and we were on the 6th floor!. The advertised free Wi-Fi was so slow that it would not even register on my iPad speed test app. It was basically useless. We had experienced the same problem at an NH in Madrid. The rooms were also not particularly clean - the same dustballs were present on the floor throughout our stay. We probably would not stay here again.