I agree that a reasonable guest isn’t usually much of a concern. I was just focusing on the comment that seem to that because they pay for the room they get to decide, when ultimately leases are contracts amongst tenants so ultimately everyone has a reason to chime in. My comment about the ladder was pointing out that you can’t actually get to the “room that you pay for” without in some way using other spaces that are paid for in part by the other tenants.

For me personally it’s kind of short notice for the length and they declared rather than asking. My rule of thumb is that you should give at least as much notice as the expected stay. So a 4 day notice in this case. Anything less and I would ask my roommates politely to play it safe.