Great experience here. Very short walk to two major train stations. Carmyta was very flexible and worked with me on my arrival (early) and departure (late). Great to be able to store your bags there while you go out and about the town. The area is interesting -- industrial -- but is actually in a great location and I always felt safe. If you're into EDM, there are three great underground clubs within a 1 minute walk of her place.
Also decent late night eats, bars, and restaurants all within a 10 minute walk. It's not the most happening part of town, but everything is within 30 minutes or so due to Berlin's great metro system, and the apartment's close proximity to train stations.
Room was nice enough and has everything you need, you won't be lacking here. Beautiful, lush grounds as well, nice to decompress on the balcony or courtyard after a long day of hiking around the city.