Can't say I've stayed at the Four Seasons, but we stayed in the St Regis in SF last year. We got upgraded to the Metropolitan Suite and that was quite the experience. Note that I paid exactly zero as I'm a long time Bonvoy Gold Member and was burning points on one of their regular rooms for a vacation, then they elected to upgrade us. I think it was due calling ahead asking for an accommodation for my autistic son (which they were amazing regarding).

I have nothing bad to say and everything good about how they handled our stay. Whether it was worth the price is (as this whole topic is about) relative to your means. I would say that it was more than we would have paid, but now that we've experienced it it's on my radar as a reasonable value. Their signature "Butler" service was beyond amazing; traveling with my son is difficult at the best of times and they handled everything.

They essentially allowed me to have an actual vacation vice allowing me to handle a series of challenges and let the rest of my family have a vacation (which is the normal way things go).