I am going to Glasgow the weekend after next with two 9 year olds. I'd like to go somewhere before then for 3 nights that is less than 1.5 hours away by train from Glasgow. I'd like to go somewhere quiet and beautiful if possible. I've looked at loch Lomand and balloch is a possibility but it sounds busy and the best bits of the loch are not accessible by public transport I think.
I'd love some suggestions please!