Wagamama (Cardiff Library)
St Davids, 14 Mill Lane, Cardiff, Cardiff
50% positive
Directions: You have to go up some stairs, but there's lots of stalls in a single bathroom, and some stalls are marked female, and most are marked neutral.
Comments: It's a restaurant, so you've got to buy something! I recommend the donburi for a whole meal, but gyoza are good for a little fast snacky thing to take away.