ladies' lounge

Short definition from Wiktionary

Noun

1. 1
   Used other than figuratively or idiomatically: see lady, lounge.
2. 2
   A room in a pub or hotel, separate from the main drinking area, in which drinks are served; originally a place for women to drink in when not welcome or not comfortable in the traditionally male-oriented public bar, and latterly a more genteel area than the public bar.