Notion's great for that, and I do use it extensively for private organisational stuff as well as project management, writing plans, research, and notes. It's currently proving very useful for managing my upcoming house move, providing a place to collect everything from recordings of meetings with estate agents to documentation to stuff which needs doing. I've invited my partner into the sale page as a guest too so it's a great shared resource.

It was just a (pleasant) surprise when I had the idea of seeing whether I could also use it to maintain a public-facing blog, and it turned out to work really well!