The Sandro Cellini Mysteries by Christobel Kent contains:
A Time of Mourning,
A Fine and Private Place, and
Dead Season.
These are set in Florence. I've just started reading the first one, about two chapters into it, and I like it so far.
link:
http://store.kobobooks.com/en-US/ebo...lini-mysteries
Available and couponable in Singapore; not sure about elsewhere.