Awesome apartments! We stayed for just under 2 weeks. Cozy, clean, nice courtyard below the balcony with french doors for a breeze. Fully functional and efficient kitchen, nice shower, very comfortable bed. All amenities and utilities are very new.
Location is perfect - easy walk to tons of great restaurants on Bergmannstrasse. Several coffee shops just downstairs for the morning time. Hallesches Tor and Mehringdamm stations a block away will take you just about anywhere you want to go in Berlin, and we usually only needed to ride 2-3 stops.
Highly recommend for a short or long stay in Berlin!