We spent three nights at Anna’s apartment. Super location - we loved the piazza at Santa stefano for early evening aperol spritz in the sun.
The upstairs mezzanine is cosy although doesn’t allow you to stand up fully. Didn’t bother us much as we weren’t in the flat loads, and mostly hung out downstairs when we were.
There was a little street noise but to be expected with how central the apartment is and it being on the ground floor. I’d bring ear plugs if it bothers you - and it never went on late.
Thanks for a lovely stay in a lovely city.