Had a great stay. Great location, very central.
Quite few stairs as the flat is in top floor so to be expected
Just beside the cathedral so bells are ringing from 8am to 10pm.
Currently the building in front of the apartment is being re-built, workers start at 8am with the bells, not a trouble for us as that is a good time to get the day started, but to take in consideration if want sleep ins.
Despite central location, was surprised that we heard almost no street noise in the evening (but was quite cold so no sure how summer would be).