Answer: The house person
Explanation:
A house person is a hotel or guesthouse staff who specializes in the maintenance of guesthouses and hotel premises in a clean and orderly fashion. Some of their detailed responsibilities and duties include but are not limited to the following:-
**** Cleaning of rooms, hallways, lobby lifts and restrooms.
**** Washing/cleaning of walls and ceilings.
Removing rubbish collected by room attendants.
**** Performance of room attendants' duties when its absolutely necessary.
**** Removing trash from service areas and taking them to the appropriate locations.
**** Cleaning up carpets, rugs and furniture.
**** Sweeping/mopping/scrubbing/polishing floors.
**** Helping room boys with heavy lifting thorough cleaning. etc
Therefore, it is the duty and responsibility of the house person to clean lobby elevators used by guests.