Hi! I also have interstitial cystitis (a name I much prefer to painful bladder syndrome), so I also have these problems! Go tos include LA Burdick in Harvard Square (buy some of their hot chocolate too, you won’t regret it), BPL and the Fairmont Copley plaza downton, the Boston Public Market near the North End, and bookstores when they have a cafe. Additionally, MA has a law that individuals with certain health conditions (as you may know, IC is generally protected by ADA laws defining bowel conditions) must be able to use any bathroom at any establishment that has three or more employees present. General Laws Part IV, Title 1, Chapter 270, Section 26. This includes employee only restrooms. I do have a letter from my doctor that I can present in these circumstances, but nobody has asked me for it yet (just mentioning ADA accommodations makes me feel like a “Karen,” but unless you have bladder pain, reader, you can’t understand what I would sometimes do for a bathroom).