Zense sells a separately bookable sauna and Jacuzzi circuit for MXN 1,000 per person: 15 minutes in the sauna, 30 minutes in the Jacuzzi and a shower, with robe, towel and sandals. Its spa menu also includes several massages with sauna use. Book in advance at the Agua Caliente branch. The photo shows the operator’s actual Zense spa interior.