I first shared my agency/consulting website built entirely in Notion three months ago. It's a rather controversial choice to do it on that platform. One one hand, its so easy to build but that comes at the cost of SEO and pageload speed. I am long on Notion, so I'm sure that they or the community (once the API drops), will figure it out.
On the bright side, my optemizaiton.com was officially covered and featured on their website: https://www.notion.so/customers/personal-websites
At the very least, I got this sick illustration 😃