It all depends on what you prefer. Personally we found all "shopping centers" CITA, YUMBO, La Sandia, Niro, ANEXIO II and Tropical were in a terrible state. In the 70s they were new. Especially CITA is in a bad state. Many people there are way over our age (and we are 56 and 57).
At night YUMBO it is the party place for mainly gay or bi men.
However ... if you are into schlager music (Dutch or German) CITA is the place to be. 😱
Also food wise these shopping centers could be a good choice. If you walk RIU Palace Hotel over Avenue de Tirajana you also find many great restaurants.
Closeby the lighthouse of Meloneras are all really expensive brand shops en restaurtants.
The Bulldog Bar in CITA appears to be a popular meeting point for swingers from 21:00 hrs
Lots of swinger clubs are in the CITA cellar. Most open at 22:00 hrs but will than be really quiet. Some of them appear to be closed. Only "Secret Swingers Club" asks 20 euro entrance fee for a couple, but that is inclusive 2 drinks (make sure you order an expensive cocktail, because that is allowed too). There is also the Tantra Club we skippend because of the theme. Most clubs have each day a different theme.
Please be aware that if you see no visitor on JoyClub they still might have visitors.
Personally we found "Peaches and Cream" a great club (outsite CITA just around the corner, below Rey Carlos Hotel). On entrance no fee, you receive a locker key. We loved the atmosphere and music.