The appartement of Lana is good for staying in Berlin . Good possibilities for public transport. Grocery and convenience stores all around. The kitchen and equipment is ok. The bathroom good. The matrasses a little bit soft, but that's personal.
Disadvantage is the noise from the traffic outside. Especially when it's hot: choose between warm inside or noise from outside. Take eventually earplugs for the night with you. And the curtains couldn't close in the master bedroom.
Besides this , it is a good place in a multicultural neighbourhood for exploring Berlin.