Join Date: May 2003
Location: Redwood City, CA USA (SFO/SJC)
Programs: 1K 2010, 1P in 2011, Plat for 2012,13,14,15 & 2016. Gold in 17 & 18, Plat since
Posts: 8,826
And of course if you're a cyclist, from Venice you can take a train to the base of the Stelvio and ride up! Late October could be questionable for weather though (but I wouldn't rule it out).
Even though I've not been to Venice, I agree it's quite a bit of time to spend in one place. On the other hand, it can be used as a base for day trips, maybe even an overnight.