I don't know what deno is and it appears that I'm the only one. Does this mean it's not for me? Would I want deno on my tiny 1 visit per hour website?
It would be great for a 1 visit per hour site, but so would PHP, or just an index.html file. Hard to really answer that question without knowing what your site is.
The strengths of Deno over Node are bulleted all over its homepage, but you likely already knew that.