Commissionaire

1. One intrusted with a commission, now only a small commission, as an errand; esp., an attendant or subordinate employee in a public office, hotel, or the like.
2. One of a corps of pensioned soldiers, as in London, employed as doorkeepers, messengers, etc.
3. a uniformed doorman.

The commissionaire familiar to European travelers performs miscellaneous services as a light porter, messenger, solicitor for hotels, etc.