Perfectly located, really everything is in easy walking distance (you never will need any transportation except coming from or going to the airport).
The Apartment itself is nicely furnished and decorated (I did not use the kitchen facilities, so I can not comment on those), the bathroom is very modern and Ada is a nice host and communication was easy and fast. The apartment was very clean (I was really positively surprised as I have a dust allergy and therefore tend to note even little spots of dust, but this apartment was extremely well cleaned).
On the negative side there is the space, it is quite small and narrow (but you see and know that from the pictures before booking) and its not that soundproof. You do not have any noise from outside the building at all but there is a connecting door to another apartment behind a shelf, which (as the main door to the staircase) could use some upgrade in isolation.
Of course, you will be staying in an old building in the middle of a historic city center, so those negatives are basically a given and its easily outdone by the positives, mainly location location location.