Dominiks place is great for the value. It felt more like a hostel, there are several rooms in the apartment that he rents out. During our stay everyone was quiet and it was quite nice. Dominik was great with communication from the start. The apartment itself is located sort of between the main tourist areas that we visited, so a short metro ride or a 20 minute walk could get you to several key places. There are some markets nearby and a pizza place with 1 euro pizza which was nice on the way home after a long day.
Be aware that there are several flights of stairs that must be climbed to reach the apartment. The washrooms are shared, there is one very small one for men (just a few feet wide) that does not have a sink. You must use the bathroom then go to either the kitchen or women's washroom to wash your hands or brush your teeth. The women's bathroom has it's own shower and it is also where the laundry machine is located. There are two separate showers that are quite small but good enough. The beds were not very comfortable and made quite a bit of noise when rolling around. However, for the price it was a very reasonable stay.