Excellent location. Quiet, normal Kiez building, renovated but not fancy or flashy. A great place to get a sense of normal Berlin neighborhood life. Good shopping nearby, the Arkonaplatz Friday food market is delightful and the Sunday antiques / Trödel market is fun. Good bike parking spot in the Hof. This is an especially great neighborhood for cycling, so definitely rent bikes when staying here and go exploring. Everything you need is nearby.
Balcony on the Hof is delightful, though there are some smoking neighbors (tobacco and pot) which makes the balcony unusable for some (relatively brief, 15-min) periods a couple times every day. But when the air is clear, the balcony and the cross-breeze through the apartment make this place a dream in the summer. It stays pretty cool even on the hottest days. The layout is great and the open kitchen to the dining/living area make this apartment wonderful for cooking and being together with family at the same time.
Some of the furniture is a little funky and rickety, and the decoration not exactly beautiful, which made the cost feel high to us. We also had to get a few kitchen things --a decent skillet and a couple knives—in order to cook properly. But the fridge is great, the induction cooktop is great.
The owners are not big communicators on the front end. But went into great detail after the fact and tried to charge us for normal wear and tear on cheap plastic chair which cracked when I sat in it.
All in all, the near-perfect location in a quiet building with a great little balcony on the Hof, as well as the superb layout, make up for the shabby ikea furnishings. We would definitely rent again.