Microsoft Word can already do the document generation thing from an Excel spreadsheet. Of course, it’s more complicated than a purpose-built app would be, but probably also more powerful.
http://www.horniman.info/DOCUMNTS/HOWTO.HTM
Scroll down to section 6, "Webpages" for explanation of this topic.
The generated website is also live online at
so the generated HTML can be easily inspected.