We're looking to go away at the end of March - 2 adults, 2 dc aged 2.5 and 3 months. Preferably somewhere warmish (but doesn't have to be hot). Would like to be near beach or somewhere where there's stuff to do for the 2.5 year old. Prefer self catering to AI. Don't really want to fly more than around 7 hours. Budget flexible but would like to keep as low as possible. Any ideas or recommendations?