This is great accommodation. The apartment is very tasteful, well located, fully equipped, airy, clean, very quiet, and feels larger than shown in the photos.
The mattresses are also good, which is very important to people with back problems as myself. The place is 5 min walk to the Natural History museum and the area is full of restaurants and cafes. Note that the in house coffee place (19 grams) serves excellent coffee, really good.
Entry instructions and guidance as provided by Maria were very clear and we had no problems at all. My only suggestion for improvement is in the area of communication with the host when required. I fully recommend staying at Maria's place as it is so pleasant and practical that it makes the whole Berlin experience very enjoyable. Maria thank you for having us, staying at your place was a great experience, we loved it!