I think that you can make a tour of prosecco area ( north of treviso ) and

amarone area near verona to taste some good wines.....

if you like white light wines choose prosecco ( simply perfect in these hot days ), instead if you like "important" red wines choose amarone and valpolicella area.......

I'm not a great expert of amarone but I can say that this winery

http://www.seregoalighieri.it/

is beautiful and have top quality products at brunello levels....

I remember, my girlfriend that is a sommelier from montalcino, bought there a lot of bottles......

instead I was drunk

:-)