Park Plaza Hotels, owner and operator of upscale and lifestyle hotels, announces the completion of a 61-room extension to the existing four-star art’otel Berlin city centre west, increasing the total number of rooms to 152. At the heart of the extension will be the 400 m2 lobby with a reception area, a reading and internet corner with free internet access, two conference rooms offering daylight and a brand new stylish bar with completion set for January 2012.