Really good story!
I like the different percepctions of the character and how you have mixed it: what she thinks (desires, thoughts about what excite her,..), her body expression of this thoughts... how she use her body to recreate the situations and her body response and how you have putted all in a place in an scenario where always are a high sexual charge.
Thanks for sharing and... perhaps you could do that she visit again the spa and she finds something good, pleausure and excitating...