Considering the Residence Tasso in Sorrento?
A VT member wrote the following comment about visiting Sorrento:
More recycled Roman bits........ by leics
As well as some in the base of the Medieval bell-tower, you can find some re-used bits of Roman (or, possibly, pre-Roman) masonry in the cloisters of St Francis.
This is a lovely little place anyway, dating from the 1300s. Within its calm cloister are the four corner columns which started their lives as three-sided columns from (it is said) a 'pagan temple'. Whether or not this is the case, they are definitely Roman and definitely worth a look.