Hello
I'm actively looking at several apartments right on the Piazza del Signoria facing the Palazzo Vecchio. I"d be staying for a full two weeks, and though the view is quite nice, I'm not sure about how noisy it will be (in early January).
If it were only for a few days and the volume of people still considerable at that time of year, I don't think I would mind that much. I have no idea whether the windows are double paned or not.
But at least there wouldn't be any motorcycles reving up!
So it's hard to get an accurate idea...
I think I would like to come back to my apartment in the afternoon to read, listen to music, etc., especially if it's raining and/or cold. If I were doing the typical tourist thing, I'd be "out and about" so it wouldn't affect me.
in Seattle, I live on the 4th floor of an apartment building on a narrow street with only minimal tr4affic but pedestrians passing or standing on the sidewalk below my window often have animated conversations that really do carry up and make it difficult to concentrate on work, as I'm practically right above them.
Of course, in winter I close the windows...