First of all, Norbert and Peter were enormously responsive and accommodating hosts. Communication with them was a breeze, and their efforts to help went far beyond the accommodation per se.
The flat was very clean, and seemed to be renovated recently. The studio part is very spacious and airy while the bedroom is smaller yet functional. The "bonus" room adjacent to the studio can be used for a kind of office as it has a real office chair, very comfy armchair and small coffee table that was pretty enough for my laptop.
The area is ultimately residential, and you can enjoy a couple of cafe and restaurants along the street and nearby where you would hear only local language.
The location is perfect if you prefer to immerse yourself in city life as a local. M2 station is basically in front of the house especially if you go through the bus station. Some trams and buses have their stops there, too. Two train stations are on the same metro line. One of the biggest malls is just one metro stop away.
Could be important for some fellow travellers to note a couple of things.
The bedroom window is facing someone else terrace, so curtains come very useful.
The flat is on the fourth floor, and no elevator/lift in the building.
Overall, it was great experience. We are very grateful to our hosts, and recommend them to others.