Hi Sue,
I would thoroughly recommend Lake Garda for a holiday, I spent 10 days there around 7 years ago.
If you want to do lots of walking it is an ideal spot, particularly if you get a hotel towards the bottom of the lake. I stayed in Garda itself, where the restaurants are numerous. If you combine it with a trip to Verona (about 45 mins away) you can have the best of both worlds!!
Really looking forward to my week away now, if still nervous. Hope everyone has a safe trip!!
Helen