Hi, we moved to Treviso last year from Washington DC with our two boys. Previously we were living in London, Treviso is definitely a small city by most standards, yet it has most things you need and its strategic position is great, close to the beach, close to the mountains, it has two airports and is on the autostrada network to drive where you need to, its also in the economic heart of The Veneto so its industrious and rich. Its a great area for culture and for kids to be. It can feel a little small at times, especially when compared to London, yet what you lose from not being in a mass metropolis you gain from not being in a mass metropolis!
We moved here for the experience and to develop business, the Covid 19 lockdown has slowed that down somewhat, but I can think of worse places to be locked down in.
Let me know if you have any specific questions.
Keith.