The pictures and description of Michele's apartment on the Airbnb site are very accurate. The apartment is a happy, modern, clean renovation of an old space, in a lovely part of town that is more bohemian than commercial; yet, it is near enough to the popular sites to walk to them comfortably. There are lots of shops around the corner, and the nearby Piazza Santo Spirito is active and inviting, with a good selection of trattorias, but is nearly devoid of hustlers and street vendors.
The kitchen and bathroom are stocked with a few basics (e.g., toilet paper - - thank you, Michele), The main bedroom is commodious and comfortable. A third adult would feel good in the cozy second bedroom, but the fourth person should be a kid who loves to climb.
Michele was helpful and attentive at the beginning and end of our very satisfactory two-night stay.