In one word, beautiful! The apartment is tastefully decorated with beautiful art with eye for details. We didn’t see Carolin as she had to work but we were welcomed by Armin who was extremely nice and helpful. The area is lovely. Very close to all the tourist areas, but Prenzlauer Berg itself is worth a day or two to spend. We had a great time getting lost in the area. There are plenty amazing restaurants and shops walking distance. I couldn’t fault anything about our stay even if I tried!