Hi Christine
We have been there loads of times years ago but we only became motorhome owners last May so we never sussed out the likely spots. Someone said you may be able to stop at St Abbs harbor and Im pretty sure there will be a few places to stay. Its a fantastic place to visit and the cliffs at St Abbs Head are just superb. From memory its a hairy single track road up to the cliffs but we have a scooter so will check it out on that first.
Will report back either during the trip or after.
Regards
Barry