We had a very good stay at Artur's appartment.
It's perfectly located, in the middle of the centre, but very quite during the night.
You have to climb some stairs to get to the appartment, but that was not a problem for us.
Artur was very helpfull with things to visit, and recommendations to eat out.
Around the corner there is a supermarket.
We would defenitely reccomend this place!