Spa Week is back and it is a true bargain. From April 14-20 you can indulge in $50 treatments at relaxation temples like Spa V at the Hotel Victor, ESPA at Aqualina and Uhma Spa.
Normally massages and treatments go for $100+ at these places. But make sure you call ahead and ask about gratuities. When I called ESPA to book an appointment I was told there would be an automatic $27 gratuity added to the bill - it's 18% of the what the massage usually costs. But the Doubletree has no such automatic gratuity so it depends on the place.