Marcels place is lovely in an excellent location. Many of the things to see and do for tourists are within walking distance. We stayed on the 2nd floor and the stairs are steep - but quite doable even for two 70+ year olds.
The downside is the street noise at night and the half-hourly chiming of the bells from the clock tower (which is quite lovely but not at night!). We found a fan in the bathroom that provided white noise that helped a lot.
Marcel was a great host providing lots of info about places to eat and lesser know places to visit.