I've used Astro my company's landing page for the past year or so [0]. We write blog posts in Notion and port them right to the site and the experience has been fantastic. There are a few understanding quirks with regard to using React etc within Astro (it's SSR'd unless you add the "client" attribute, and counter-intuitively the Component Lifecycle doesn't run the same). For client landing pages, we'll use Astro too- occasionally they'll want a CMS to write their own blog posts without a Git / commit pipeline. In those cases, Netlify CMS plugs in seamlessly and has a generous free tier.
[0] https://koptional.com