Zug. It is also not that far to justify commuting. So you can justify that case should the riders of Mordor be out for your blood, which I doubt.
However, you have real substance so these rules apply internationally as well.
No, you cannot. Italiano is a must and it better be almost native-like fluent level,︂ not just some broken ciao ciao.
However, you can get by of course and order︃ food in restaurants, that is no problem, but you will stay forever the tourist and︄ people will let you feel that way very very clearly.
I cannot see any foreigner︅ wanting to live anywhere outside Zurich, Zug, Geneva and maybe Basel. The other places are︆ just very tough to integrate and isolating without any strong knowledge of local language.