Great place, plenty of public transport around. There was a tram stop (i.e. M12) right in front of the apartment and the S bahn was just a 5 minute walk down the road.
In terms of the Airbnb itself - it's a massive apartment. One room has a queen bed, and the other room has two single beds. There are two balconies, one that has a view of the street, the other has a view of the TV tower.
The street the apartment is on is probably one of the most trendy streets in Berlin. There were plenty of bars, cafes, and stores to check out within walking distance. Would definitely recommend this place.