Hi I am looking for self catering for 2adults and 2 children aged 10,8 (have looked at coastal retreats very booked up and too pricey for us but lovely). I was hoping to find something similar if it exists for a bit cheaper with a garden preferably in July in or around northumberland area. We have never been before but we would be looking to visit the The Harry Potter Castle, beaches, hadrians wall or any other suggestions would be grateful.thanks in advance.