Generic website builders
Wix, Squarespace, Webflow: great for brochures, missing the core.
Generic builders are excellent for visual websites that do not need complex backend logic. They are fast to set up, look professional, and require no technical maintenance. For a vacation rental business, however, they always hit the same wall: the backend.
A booking site for short-term rentals needs a real-time availability database, booking conflict detection, payment processing, iCal import and export, transactional email flows, and multilingual content management. None of these are built into Wix or Squarespace.
The result is a "Frankenstein stack": a Wix or Squarespace site with a booking widget embedded from a third-party service, where calendar data lives in two systems and the guest experience is inconsistent.