I have no clear idea what this place is called; the above is from the Lonely Planet. Apparently there is a tradition in many towns in Vietnam for visually-impaired people to be employed as masseurs, though the profession has a somewhat sullied reputation here more generally. This particular establishment is run by the local Association for the Blind.
I went there with Mike after lunch, before playing badminton, which may have been less than ideal. Like many other people I had a less than satisfying experience; it appears to depend a lot on who you get.