We really enjoyed our stay but the apartment did take some getting used to.
We stayed in October, so couldn't make full use of the balcony and without that, the apartment is a little crowded. The bedroom in particular has a really low ceiling and if you're six foot or above, you're going to struggle.
In addition, the kitchen is small as to make it barely accessible.
As a host, Lorenzo and his team were terrific and communicated with us brilliantly.
Vicolo del Cinque is incredibly noisy at weekends. You are saved from most of this and can hardly hear it in the apartment but it is still something to be aware of.
Overall, good, but I wouldn't go back because of the location and slightly cramped nature of the apartment.