He is considerate, which best identifies his character trait.
First to spend more time with the family, second because that way we could do more things in the summer, and third because teachers need long vacations
It's been a while since I've read the book and I don't really a lot of the context, so just from this passage I would say it says he notices nice houses and other people's wealth and maybe envies them a little bit. (although you don't get that explicitly from this passage.)
Italian is the proper adjective
