We rented two flats from Lana to accommodate our large group (there were 17 of us) and it was the perfect solution for us.
The location of Lana's apartments is ideal for anyone trying to experience the real Berlin - central but at a safe distance from the most touristy spots.
Lana was helpful and communicated clearly before, during, and after our stay.
One thing to note is that the building & street is a bit noisy at times, so if you are looking for an exceptionally peaceful and quiet apartment this may not be the right fit for you. That said, it was ideal for our group in more ways than one.