sex-trade information kiosk
Euphemistic term for a storefront that provides information about adult entertainment establishments; literally 'free information center'.
There are several sex-trade information kiosks in the entertainment district.
I got a shop recommendation at the information kiosk.
Compound of 無料 (free of charge) + 案内所 (information center). The literal meaning is 'free information center', but it is used euphemistically for adult-entertainment referral services.