As I am hosting in Thailand, all of my houses are full‑villa rentals with 5 bedrooms. For each booking, I provide 5 complete keychains, each including the front door, car park, and bedroom keys so every guest has convenient access. On check‑in day, the keys will be placed in a lockbox, and the code will be shared a few hours before arrival. I am also planning to install a smartlock for added convenience, though I need to ensure it can withstand Thailand’s high humidity of around 80% before making the switch.