What about a visit to one of the Spa towns? Unfortunately the ones I would suggest (Harrogate, Bath) are probably a little too UK based.. but I've done relaxing girly weekends in Harrogate, where a visit to the newly restored Turkish Baths can be combined with treatments, and there are plenty of nice eating, shopping and drinking opportunities there!

(Afternoon tea in Bettys is an absolute must - dieting is not allowed )

I've suggested Bath as well, because I know there was a big redevelopment of the spa there going on, which was due to open a couple of years back... but haven't yet made it myself.