The last one of my regular haunts in the HS area, Chez Henri, closed a few weeks ago, and I'm at a loss... I've never managed to warm up to Grafton St., or Sandrines; I like the Harvest, but I can afford it only rarely... Upstairs on the Square might have done the job, but it will be closing soon too.
The only other place that I've found that's in the same wavelength as the ones mentioned above is Bergamot, which I like a lot, but I think it's outside of the Harvard Square orbit. (Also, as with Harvest, I can't afford it very often.)
I'm open to suggestions.