My company was in WeWork for roughly 2017.
I had your initial impression, it does look good and you can certainly get up and running quickly.
But after a while, my feeling was that it really seemed to be poorly thought out as an office space. I get the appeal of natural light, but you were looking right at your neighbors. The hardwood floors look great, but everyone with heels is banging away, and there was generally no soundproofing.
So many decisions seemed to prioritize looking hip over being functional.
And the details weren't well done. Their tech platform, their attempt at social media, the printers and space reservation and such, all look nice at first and then you realize how unpolished they are after using them for a while.