Myself, my partner and her 13 year old son spent 5 nights in Katharina's place. Our apartment was connected to her main house from below. Katharine was a warm, welcoming and knowledgeable host. She greeted us once on arrival and once we left at check out time. We did not see her between those times. The apartment was well suited to our needs which was exploring the centre of Berlin. There were bus stops which had frequent connections to both Schönefeld Airport and into the city centre, not more than a five minute walk from the apartment. The neighborhood itself was very quiet and it only took a 5/10 minute walk to discover restaurants, bars, and shops. The apartment was a little basic but it had almost everything you would need. The hot water was instant and there was more than enough pressure for the shower. There were bathroom guest towels provided although they were relatively small and we might have struggled if we stayed there any longer than five nights. The Wi-Fi was immediately available although you sometimes had to move your location for a signal, depending on where you were. The bed (or perhaps the mattress - quite thin and you could feel the springs) wasn't very comfortable and we struggled with the size and fabric of the pillows (tip; fold them over/double them up to effectively make two normal sized pillows). There was a fridge with a small freezer compartment, hot plate with two hobs, a microwave, a toaster and a coffee machine. Most of our time was spent out of the apartment so it was fine for our needs. The only slight downsides were a fair amount of cobwebs and dust in every room, guest cups that felt a little too small and delicate to handle (anyone with arthritis or large fingers will have issues), and one (cold) night where the radiator in the bedroom didn't put out any heat (which it had done the previous night) and there were no blankets we could have used (it was also after midnight and didn't feel appropriate to disturb our host at that time). All in all it was a nice stay in a nice neighborhood with no disasters and offered good value for money.