What changes when you go from one property to twenty?
At one property the house manual lives in the host's head and a message template. At twenty that model fails in a specific way: the information is right somewhere and wrong somewhere else, and nobody knows which. The failure is not that a guide is missing, it is that there is no single place a change lands. A per-property guide edited from one account turns "who remembers the new bin day for unit 12" into "edit unit 12", and every guest already holding the link sees the corrected version.
- One account, one guide per property, each on its own dedicated address.
- A change is edited once and is live — no reprinting, no resending, no per-guest correction.
- The structure repeats across the portfolio while the content stays specific to the unit.
