In order to write on someone's "wall", all you have to do is create a post, and then (where it usually says "public"), type their name in, and erase everything else. It will then go only to them! Ta-da!
This place is a hidden gem. Walked away with a very happy tummy! Our service was fast and very polite. Waiter recommended the kao soi (curry soil) which was delicious! Their mango sticky rice is pretty good as well. We'll be going back for sure.