[adj] free from ostentation or pretension; "the restrained elegance of the room" [adj] not ostentatious; "his unostentatious office"; "unostentatious elegance" [adj] exhibiting restrained good taste; "the room is pleasant and understated"
discreet, in good taste(p), modest, quiet, restrained, tasteful, understated, unpretentious
ostentatious, pretentious