^It would be a good idea to stay longer in Italy since malaki din matitipid nyo sa accommodation. Aside from the airfare one of the biggest expense of a trip is the lodging and shopping of course
I'm looking at my Michelin road map now and your aunt's place is a little bit north-west of Florence. I'm not sure lang how the train connections are but location wise your aunt's place is a good base to do day trips to the following cities via train:
Florence (to the south east), Lucca (to the west), Pisa (further west), Cinque Terre (to the north west). Some cities to the south of Pistoia that can be easily reached via train too would be Siena, San Gimignano, Volterra, Montepulciano to mention a few.
So if you try to plan your day trips pwede ganito yung IT mo:
Day 1 - Florence. Get there early and leave late to maximize your time. Here's a website that you can read to check out the places in Florence that might interest you:http://www.visitflorence.com
Day 2 - Lucca and Pisa. You can spend the morning and have lunch in Lucca then head on to Pisa right after. Lucca is a walled medieval town that is less touristy compared to Florence. You can walk the ramparts and see the city within. While Pisa is well everybody knows about Pisa
Day 3 - Siena. Same with Florence spend the whole day there just walking around and enjoying the city. Don't worry marami kang makikita dito baka bitin pa isang araw. Here's a good website about Siena:http://www.discovertuscany.com/siena
Day 4 - San Gimignano and Volterra. These two towns are near each other. I really haven't explored the train connections between these towns since hubby and I are planning to rent a car when we do our Tuscany road trip. You can refer again to the above website about San Gimignano and Volterra.
Day 5 - Cinque Terre. Once again spend the whole day here. If you're tired na to DIY there are tours offered to the 5 towns originating from Florence. Otherwise, madali naman yung train connection here. If you're planning to rent a car, park your car in La Spezia and hop on a train to CT. The 5 towns in CT from La Spezia are Riomaggiore, Manarola, Vernazza, Monterosso and Corniglia. You can hike the trail from Riomaggiore all the way to Vernazza but not sure yet if the trail from Vernazza to Monterosso and Corniglia will be open by the time you get there because of the recent flood that damaged most of the place. Here's a website that can guide you on CT:http://cinqueterreonline.com/
Day 6-8 Venice and Verona. You can either go to Verona first and overnight then proceed to Venice to stay two nights or do the reverse Venice first then Verona. But if you're planning to fly to Paris after this then do the former which is more logical since Easyjet (cheapest LCC so far) flies out of Venice Marco Polo airport to either Orly (ORY) or Charles De Gaulle (CDG).
Days 9-14 France. I'll post the IT on the Paris thread na lang later.
Now it's up to you to decide how you want your trip to be. If you want it really relaxed, drop a town or two. Then of course there's shopping! There are hourly shuttle buses from Florence to the outlet malls for EUR5/person one way. The outlet malls are 30-45 minutes by bus from Florence. Here's their website:http://www.themall.it/en/
Okay, yan na muna. Discuss mo muna with your hubby how you want your trip to be then you can just tweak it hanggang ma-perfect mo IT.