Can anyone advice me on the best bus service from Siem Reap to Bankok? Is there even a bus that goes directly there, or do you have to change at the border? If so which is the best bus to get from the Cambodia/Thai border into Bangkok. I need to go to Bumrungrad Hospital for knee a problem. I have read some horror stories on the net, but not sure of any improvements since then, and with a bad knee I sure don't want to get myself in a fix.
Thank you!
GP