I travel a great deal. Some cities will remain legendary in my mind for their hospitality during my frequent visits. Cities deserving extra special mention include NYC, Baltimore, Paris, Seattle, SF. Other cities are HORRIBLE to visit. San Diego comes to mind (sorry, nice weather, but "pass!"). Edinburgh is pretty but (based on 3 or 4 trips that I've made thus far) emotionally cold.
I've been happily surprised at the level of hospitality that I've encountered here in Pittsburgh. Many CMU people have invited me out to dinner, or to their homes. Old friends who now live in Pittsburgh have taken me out to shows, bars, etc. Tonight I had many social invitations: a concert, a dinner, etc. I'd already made plans to hang out with Lli (old Portland friend since 1996?). Tonight was the "gallery crawl" in downtown Pittsburgh, Lli and I ended up spending our entire gallery crawl time at this gallery. We also drove around a bit and talked, and went to dinner.