We stayed in Carlotta's apartment in mid Oct 19. We are 4 adults and the common area with one sofa and one small dinning table is sufficient for us to have drinks. It is well decorated and looked warm. The master bedroom is big and comfortable despite the cleaning helper uses one of the corner to keep all the cleanings items, it is ok as it was covered by a curtain and so it is not unsightly.
The guest room with a high single bed and pull-out bed is too small for 2 adults. Carlotta did advise us before we confirmed the booking to look for other room as she agreed that the room may not be suitable for two tall adults. After comparing other alternatives, we decided to confirm the booking mainly because the location is extremely good. It is so convenience to go from her unit to everywhere we wanted to go, the station, the central market, the various places of interest and the places for food.
We highly recommend her unit for couple or couple with one kid or young adult. As highlight by other reviewers and similarly in all other euro countries we have visited, the unit is located at 2nd floor with long staircase. So do take that in mind if you have heavy luggage. We read about that earlier, hence, we only took with us an overnight backpack when we travel from Venice to Florence.