Messaging with Elke before we arrived and during our stay was prompt and helpful. We collected the keys from a shop on the street (as Elke was away the first night), which was seamless.
The bedroom we used was spacious and the whole apartment including the shared bathroom was very clean and tidy. We really enjoyed our first night, cooking a meal after an early evening stroll around the neighborhood. Then the next day, making breakfast and getting a couple of hours work completed before heading out to explore Berlin.
Sadly, the second night was not so pleasant. Both in the evening (after returning from dinner) and the next morning (when trying to have breakfast) we got the feeling it was preferable that we were not in the kitchen/living space. Our only option was to be in our bedroom as Elke was either watching a movie or working on her laptop, on the sofa, even though she had a large bedroom that she could use rather than being in the communal area. If you only need a bedroom to sleep in and are not wanting to make meals or relax on a sofa, then Elke's place will suit you.
The location is superb for exploring Prenzlauer Berg and has easy access to trams / the subway for sightseeing greater Berlin.