Staying at Franziska's it's been absolutely delightful.
The house is huge, clean, modern and extremely fascinating. The room is very cozy and there is plenty of space to hung your stuff, TV and the bed is super comfy.
You have your own bathroom, the only thing shared is the shower but this wasn't a problem at all! You have full access to the kitchen to make yourself a coffee or just to sit and relax/work.
Franziska and her family are super friendly people, very nice to talk with and she is extremely caring and not intrusive at the same time. You will be given your own keys and that's it. When we needed some advice for restaurants she was absolutely great (thank you btw, the french restaurant was AMAZING!!). She was very present before our arrival, asking if we needed help or info to get to the house. She was also very nice about the check-in timing.
The description is absolutely accurate and the neighborhood is simply great! You have bake shops and supermarket under the flat, and the house is 5 mins far from the tube station. Mitte is a great place to live in, very close to a huge amount of locals of any kind and it's really beautiful! Moreover, is very quiet.
Staying there for a week has been a privilege. We felt like being at home, we enjoyed every single minute and we have no doubt whatsoever... If we will have the occasion to go back to Berlin again, it will be at Franziska's!!