Legal term
[Prague] Ot: místnost
A spatially enclosed part of a structure, defined by a floor, ceiling or roof and rigid walls.1
[Portugal] Ot: Compartimento (de um edifício)
A room is each of the enclosed spaces into which the building is divided.2
Additional notes: A room is bounded by walls, floor and ceiling or roof and is accessed from the outside by at least one doorway or equivalent constructive arrangement. Enclosed spaces without access aren’t rooms.
1: Prague building regulations
2: Decreto Regulamentar n.º 5/2019, de 27 de setembro