Warm version
Best when the guest has already messaged you and you want to sound personal.
Hi {{guest_name}}, thanks for reaching out about early check-in requests. say whether it is possible, what it costs if relevant, and what the guest can do if the unit is not ready. Invite the guest to confirm their arrival window. Full details are here: {{guide_link}}Why this works
It acknowledges the guest first, answers directly, and moves the detailed instructions into the guide.

