I have 4 days or so to spend while a wait to meet up with a friend. Would like to visit south or southwest of London (on the coast). Prefer not a 4 day tour. Prefer to travel somewhere, stay 4 nights, and explore by foot or just relax at beach. Prefer budget style back packers so I could meet up with others for meals. Devon? Dorset? I've been to Brighton before. Prefer to see somewhere different. Needs to be safe. Any suggestions??