What is a minimum length of stay (MLOS)?
Updated By Akkrev
A minimum length of stay is a rule that a booking must cover at least a set number of nights. It's a common reason AI agents report hotels as unavailable.
A minimum length of stay (MLOS) is a restriction that a booking must be for at least a certain number of nights, for example two nights at weekends, three on bank or public holidays, or seven in peak summer weeks. Hotels, B&Bs and rentals use it to avoid single nights that leave gaps.
Why it matters for AI agents
How a booking engine shows MLOS decides whether an agent understands it:
- A message, such as “two-night minimum on Saturdays”, gives the agent something to tell the guest, and it may offer the longer stay.
- Greyed-out dates with no explanation look the same as a sold-out night. The agent reports “no availability” and moves on.
Because minimum stays are tightest on the busiest dates, they affect exactly the bookings guests most often hand to agents.
Related
Closed to arrival is a similar restriction on arrival days. See minimum stays at US B&Bs and changeover days for UK holiday lets.
Why it matters for AI visibility
Minimum stays can make AI think you’re fully booked. Clear rules help AI describe you correctly.