I do not know about bed bugs. Gads, the roach infestation was bad enough. It was bad enough that I would not stay there again. If you have no other option, I would insist on a room on an upper floor. But knowing how roa he's travel, I would be wary of that as well.
I do not know but we didn't have bed bugs in our room because I check before using the bed or placing my luggage in the floor. However I travel with bed bug spray I got from Lowes or Home Depot and spray the beds down where ever I go and don't put my luggage on the floors.
Get an answer from Hampton Inn Americus staff and past guests.