Group trip ideas for solo travelers in April 2025?

Hi everyone! I just found out the site is back online. Awesome! On the off chance, I’m posting this because I’ll have some free time between April 14 and 25, 2025. I’d love to go somewhere for 5 or 6 days with a few people around my age (60-70). In France or Europe—all ideas are welcome! If you’re interested in forming a small group, don’t hesitate! I’m also brainstorming some possible destinations on my end. Looking forward to hearing from you!