Hi can anyone pls recommend a summer holiday destination - a small city/town/village a short transfer from the airport by public transport (flying direct from north UK, no more than 3 hours flight time). Relaxing, some stuff to do/places to explore, good for a variety of ages, under 30C on average. Previously we have liked Krakow, Lake garda, Salzburg, Llubjana but know there are so many parts of Europe that we have no idea about and wonder if there are any hidden gems/recommendations. Any ideas? Thank you!