Pros:
New apartment is renovated, basically new, and is spotless.
The beds are very comfortable, and having 2 rooms is very convenient for more than 2 persons.
Great outdoor yard with lot's of green, fun for the morning coffee.
The location is great, nearby the urban commute, neighborhood is quiet and peaceful.
Great strong shower.
Cons:
Apartment design is somewhat claustrophobic, following the original old building structure, with simple, minimal, practical ikea design, not very warm or welcoming. This does not reflect in the photos!
Basic amenities were missing, like toilet paper (we had to ask the owner for more)
Same is with the espresso machine (no capsules) or even tea bags were not to be found.
As for communication with the owner... As one who already stayed in lots of airbnb's I would expect a bit more welcoming approach. The communication was fine but you don't get the feeling that someone realy wants you to be happy.
I can only guess that it's due to the fact that it's a holding company rather then a private house, so you are just another customer coming in and out.
Overall, if you're in for a place to rest your head at night - its great. But if you are looking for a place with a bit of the urban Berlin soul - look somewhere elae. There are a lot.