Hi. I'm a bee enthusiast.
I have mongrels probably with a lot of native (Amm) Black bee genetics since they are mostly small and dark and survive well in our British climate.
Any pure bred colony will not stay pure for long unless you requeen regularly with purchased queens, which are usually Artificially Inseminated (AI). Personally I prefer a more natural approach where hives are allowed to swarm and new virgin queens mate with the strongest local drones, as I think that produces a healthier colony best adapted to local conditions, but you don't always get the best tempered bees. That said, I have 8 colonies right outside my back door without any issues.
Of course if your climate is similar to Italy then Italian (Carniolan) bees may do very well and yes they are supposed to be very mild mannered and productive but once they swarm and the new queens cross breed, temperament is in the lap of the gods.
Good luck with your new venture. I hope you find it as enjoyable and fascinating as I do.