Prasad's place was great for our group of 2 couples, 1 single adult, and 2 small children. It's located very close to the Heidelberger Tor s/u-bahn, a couple of grocery stores, and a nice park. The apartment itself is beautiful, with quality furnishings and accessories.
It seems like a place where someone really lives, not a place that is just rented out to airbnb guests. The kitchen is the best we've seen in Germany, with a big fridge, lots of counter space, and modern appliances. In some cases (combo oven/microwave), the appliances were too modern for us, but the manuals were all there for us to read up on.
There were several travel books and magazines throughout the house that we made good use of, too.
We had a couple issues with the apartment door locks and window locks, but Prasad and his co-host Anna were very responsive over phone and text. We'd recommend this place to anyone visiting Berlin.