Another option for just a nice massage with low tip may be Happy Feet (but request a female in advance, of course, as some guys work there, at least at the one in Belmont). I've had quality non-erotic massages there from women quite good looking and tip was $20, and definitely no expectation of more. Also had similar experience at Belmont Health Center, though I've yet to see any young attractive women there, after even three visits.