Another Hotel Fire Door Question

[mtCDCcb]

Have a hotel. 5 story. My question is what is the door rating requirement for the following door. On the bottom floor we have a door that leads from a hallway (where the hotel guest rooms are) into a service hallway which provides the hotel's laundry cleaning services. What is the minimum required fire rating for this door. Thanks.

[Jerry Peck - Codeman]

Presuming that the corridor along which the guest rooms are is an exit access, in which case I will presume that the exit access is 2 hour rated, which means that door would be 90 minute rated.

I've made a lot of presumptions based on the information given.