A compartment in a passenger transport aircraft is outfitted with functional elements that are adaptable for various uses or purposes. The compartment is bounded by walls defining dimensions approximately corresponding to a handicapped accessible toilet compartment or two standard aircraft toilet compartments. The functional elements include a seat that can be tilted up into a stowed position or tilted down into a seating position over a toilet, a table/seat that can be tilted up into a stowed position or tilted down into a table or seat position, a movable cover to selectively enclose and form a counter surface over a handwash basin, various storage spaces, etc. The functional elements can be selectively arranged as needed to configure the compartment as a handicapped accessible toilet compartment, a childcare or medical care room, an office work compartment, a detention cell, a smokers' compartment, etc.