Sitges has two gay saunas — Sauna Sitges and Wings Sitges, both listed above. Sauna Sitges, on Carrer d’Espalter just off the bar strip, is the long-running classic that has been going for years; Wings Sitges is the newer addition.
If you want more choice, Barcelona is a short train ride away, with 5 listed gay saunas.
Sitges also has a busy bars & clubs scene, plenty of gay-friendly and gay-run hotels, restaurants, and LGBTQ+ heritage sites. Those listings are real, checked, and kept current.