Ryanair are doing very cheap flights to Klagenfurt in Austria from Stansted in June if anyone fancies a few days in lakes and mountains. We went at the beginning of May for a week with our nearly 2 and nearly 4-year olds. We flew to Trieste (2 years ago we flew to Bologna with the idea of visting some Italian towns but that was a bit ambitious with a 1 year old!), but Klagenfurt is in a lovely spot. We stayed in a hotel run by friends of my dp's family. The kids loved it, a swing, slide, roundabout, indoor pool was all they needed. Very simple stuff, simple food, good Austrian beer in the hotel bar once the kids were asleep, baby monitor on! Nearby drives to pretty lakeside towns and mountains.