I would recommend Birgit's home for a short stay in Berlin. Birgit and her daughter are very friendly and met me with thoughtful gifts upon check-in. It is a very beautiful designer apartment and would make an excellent tourist visit and is in a gorgeous area.
Please be aware that - at the time of writing - some of the pictures are not accurate as the decor has changed (including the children's room which is now a teenager's room and changed balcony). I think they are great changes but wanted to point out in case you're particularly attached to something. I also would have like to have known that the shower is hand-held, that the kitchen table is no longer there (I intended to use for work), and there are no bedroom curtains or blinds.
I ended my stay early and was refunded the remainder by AirBnB. While I would definitely recommend it for short, tourist visits - I would not recommend it for longer periods or for work trips. There is no comfortable desk space (the picnic type table from the photos is no longer there, the other tables are curved so not good for typing), the beds are not very comfortable, there are no shades or curtains in the bedrooms, and the owner initially wanted to come into the apartment to water plants and had planned to come back and forth to pick up things for her and her daughter. If you need privacy for work or need to isolate after travel, this is not ideal. The owner did agree to let me water the plants but my stay was cut short by the host's illness and my discomfort with the uncertainty around access to the apartment.
Additionally, this is the only apartment in Berlin that I have seen in over two years of work trips here that does not offer discounts for monthly rentals and, upon reflection, the price is definitely not worth it for a long stay. I initially considered staying longer to avoid the hassle of moving, but with the potential privacy issues and the cost versus the working situation, I relocated to a much more suitable apartment for a fraction of this price and am thankful to AirBnB for their assistance throughout my stay.
In sum: if you're going for a tourist, short trip and are looking for a magical instagram worthy spot, go for it! If you need a work space and a longer stay, I'd recommend somewhere else.