If his username is accurate op might get a lot out of it. I can say that
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four hands Thursdays are an incredible (though not exactly raunchy) experience and damn good vfm.
Most providers have no true understanding of tantra or what it actually means. There are spiritual remedies/options out there, mainly focused on healing and addressing things beyond carnal pleasures. Most of these places are dressed up rub and tugs- if you encounter a non-sexual spiritual service/provider you will see the difference.
Just my opinion, of course, but it seems pretty clear - even from the website you provided - that it’s a guise for a massage and Hj.