My stay at Alberto's overall was extremely comfortable and I would actually stay here again. He is a very nice guy and very responsive.
The flat is in a great location, looked like the pictures and is ideal for 1-2 people.
The wifi was slow to start with but was upgraded (I did have a pay a part of that) the furniture is dated as is the TV. Kitchen is well equipped. In my opinion not enough towels if more than 1 person (I didn't have a problem though). The church bell is annoying till you get used to it.
If you want night life langstrasse area is better. If you want old town and scenic streets with cozy cafes and bars this area is great. Very close walk to main train station.
Overall I think it is a great place and I would stay here again and recommend it to my friends.