belowstairs
/bəˈloʊˌstreɪz/Definitions
1. noun
The servants’ quarters or the area of a large house below the main living areas.
“The belowstairs staff worked tirelessly to prepare for the party.”
2. adverb
Located or situated below the main living areas of a house, especially in a large house.
“The belowstairs area was not as well-maintained as the rest of the house.”