Hi Coen!
Thanks for reaching out to us!
Yes, your question makes total sense. You can indeed import from a Google calendar using an Event Aggregator license and the event description will work exactly like you described.
After importing events, you will then find the event description inside the WordPress post content editor.
As a reference, let me point you to the following article about importing from a feed or URL > https://theeventscalendar.com/knowledgebase/import-from-feed-or-url/
I hope it helps! Let me know if you have other questions.
Best,
Victor