Check out Bella Italia ( just outside Pesheria del Garda) on shores of Lake Garda. Excellent for Kids & very safe.
Nearest airport would be Bergamo. You'll need to hire a car but very highly recommended.
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Excellent Campsite - Venice 90 minutes away by car, Verona and Brescia even closer.
Get a small diesel - we chose a 1.6 CDi Ford Focus C-Max - which takes away much of the cost of travel - and watch out for the Italian drivers - worse than the Portuguese drivers in my experience of driving abroad, which includes north and south France, Monaco, Cyprus, Crete and Spain.
Lake Garda is right at the northern border of the camp, separated by a low railing, a footpath and a shingle shore.
Pedalos and canoes for hire and swans to feed.
You could spend several days just touring around the Lake itself.
Sermione to the west is a bit of a Tourist Trap, and pricey.
Two excellent restaurants on site, one with stunning views of the lake. €5.00 in the other one gets you a huge margherita.
Look out for the lizards sunning themselves near the back of the "upper" restaurant.
There are multiple pools, slides, aqua aerobics, the usual.
Mixed crowd there from all over Europe except the French for some reason - don't forget the Austrian and German can all drive there in a days driving.
The field to the south of this hosts the kiddies clubs, football, volleyball, a boules court and a short archery range, the latter is run by the Bella Italia Campsite.
Peschiera has a few nice restaurants and a market - on Saturday IIRC- but watch out for the price of prawns from one of the refrigerated trucks - triple the prices from Dunnes Stores!
If using it as a base to see the sights, plan ahead with one of the excellent "Dummies" guides or which ever you prefer as you need to book in advance for some museums.
Look for the International reference when using the ATMs - the one at the Camp Entrance is fine, the two in Peschiera didn't work in June of this year.
If car touring is not for you there is a bus stop near the camp and trains from Peschiera.
Enjoy Italy wherever your go - I wish I was going back there.
ONQ.
PS If you visit the north of Italy. DO try to visit Venice, even if only to say you've been. A bustling and wonderful City, its a unique experience.
Park in one of the several car parks on the way in and be prepared to walk for hours.
Drink plenty and save some Euro for lunch near the Piazza San Marco - but don't eat in the restaurant facing into the Piazza itself, which is usually bedlam.
Walk around the corner on the left and sit facing the lagoon for a more reasonable price and wonderful view.
Clean public toilets are 100M away on the left and bring some coins for access.