I spent a week in Katharina's apartment, and I think it is a great choice for 1-2 people looking for an inexpensive option for a very centrally located one-room flat in Berlin. It is close to the U6 line and the M41 bus, so you can get just about anywhere quickly. The king-size bed was very comfortable, and the big pillows and thick duvet made it super cozy. The studio does not have a kitchen, but there's a fridge, hot plate, and electric kettle, and there are more than enough places within walking distance to get food. There's also a very nice cafe just down the street. All in all, the flat was perfect for my needs. Thanks, Katharina, for being such a responsive host!