I stayed at Fai's apartment with 6 additional friends and we really enjoyed our stay. Even though we were late in notifying Fai of our arrival time, she was understanding and arranged for her friend Inna to help us get settled in.
The beds were comfortable. Two couples slept in full/queen size beds, another on a very comfortable sofa bed, and one more on a mattress on the ground.
The kitchen had all the necessary items we needed.
The apartment is less than a 5 minute walk from the Innsbrucker Platz. Beware it will take at least 30 minutes to get into the city based on our experience.
We were only notified of check out 2 hours before check out time. Fortunately we were coincidenently heading back at that time, but it would have been nice to know a day in advance.
Overall we had a wonderful stay and highly recommend it, especially for a family because it has a great park next door!