Pretty late for using Calendy, but I absolutely love it. The Zoom integration is super easy to set up, and the free option great for setting up 30min-1hr meetings.
Features are top notch, round robins and it's features are superb, the only part lacking is complete customization on the ID-fields, and language settings. Otherwise can fully support this wonderful tool :)
I have used calendly in my professional enterprise and my personal consulting life. It is the gold standard for request-based (attendee) meeting bookings. The free version an get you quite far, and the paid versions offer workflows that are best for business.
Calendly