The apartment is light, bright and airy and the rooms are quite large. We appreciated the second bedroom for our larger group. The beds were real beds and not hard futons. The kitchen is well equipped with cookware, utensils, and small appliances, we found it totally adequate for preparing meals from scratch. The building had a hot water problem while we were there. Our host handled it in a very professional and equitable manner by providing a rebate.
My only disappointment was I felt the apartment could use some freshening up. I have 5 star standards when it comes to cleanliness with rentals and found the apartment to be more family clean and less guest house clean. I passed my recommendations onto our host who was very open and appreciative on how to take the housekeeping and decorating up to the next level.
Please be aware, even though the apartment has been refurbished the stairwell has not. There isn't an elevator and it is a 3rd floor walk up to get to the apartment. Considering the size of the apartment and a well equipped kitchen this rental is a reasonable value in Berlin.