I stayed at Ida's apartment with my Family and we all loved it!
The apartment is huge, really nicely presented and in a fantastic area with so many great places to eat, drink and explore nearby. It was perfect for our trip to Berlin.
Ida's communication is good and although they were away for the start of our visit, the keys were left at a bar opposite and Ida messaged to check we had arrived ok and gave a suggestion for dinner in the first night. The restaurant was a really lovely local restaurant with great food and service.
The only negatives that I could mention is that the apartment is on the 3rd floor so lots of steps to climb, this was not a problem for us but may be for some. Also my dad commented on the wardrobes being full, meaning there was no option to use them to hang your clothes. There were spare hangers left out for outside the wardrobe and this was fine for me but he would have liked to have been able to unpack properly.
Overall I would definitely recommend Ida's apartment for a home away from home in Berlin.