I had never been to Lake Garda before and so I wanted to compare it to Lake Como. We stayed there three nights, and only one day was nice (well, that and the day we left immediately after breakfast). It rained pretty heavily one day, so to wake up the next morning to a glorious sight, and crisp and clear air, was refreshing.
Lake Garda is quite dramatic in the north because you are entering the Dolomites. The south becomes dramatically... flat. It's interesting to drive along the lake and see how quickly it flattens out, too.
This is the path that leads down to the waterfront and to our hotel in Malcesine. You can just see it peeping out, the pink Hotel Castello.