Starry

No because actually imagine the current hotel as it is and suddenly there's a flash of light or portals open up and two people come stumbling through. One they clearly recognize as Alastor though he's dressed more casually then they'd ever thought they'd see him and the other is a human who they very quickly learn is actually also Alastor.

Past Alastor hasn't made his deal with Rosie yet, maybe he hasn't even started trying to communicate with the other side so this whole thing is a shock. He's already started killing people so he's not surprised that he's in hell but also What The Fuck Is Going On???

Future Alastor actually thinks this is fucking hilarious and is not freaking out nearly as much as his past selves because unlike them they know what the future holds. They all find out he's not only still at the hotel but is actually married to Lucifer and Lilith with kids of his own (the more attached I make him to people the more everyone will freak out and the funnier it is for me specifically)

Current Alastor is trying to get them Out but the more he learns about his future the more confused and panicked he gets. He doesn't understand how he could have possibly let himself get so attached to these people especially Lucifer (human Alastor also learning he married the devil??? From The Bible???)

Lilith wakes up human with no memories of anything after Eden. She doesn't know where she is or what anything is (Why can't I see the sky? What do you mean there's a ceiling blocking it? What are you talking about?). She has Lucifer but he looks different and he won't explain why. She has a daughter but she doesn't understand because she didn’t want to be a mother. Where's Eve? Where's Adam? Who are all these other people? She thought there were no other humans. Who is this other man that she was sleeping next to and why is he trying to hurt Lucifer?

Alastor woke up in a strange place with strange people. He doesn't know who Lilith is and he doesn't know what Lucifer is. He'd been trying to reach the other side but this is not what he asked for. He's wearing clothes that are much too big for him to the point where the pants just fall off and he's left in an oversized shirt. The demon won't let Alastor through the door and Alastor can't overpower him so he locks himself in the bathroom. He tears the place to shreds to look for something to defend himself with and ends up with scissors.

Lucifer wakes up and both his partners are humans and if that wasn’t insane enough they also have no memories of being in hell. He has to try to answer both their questions and comfort them while keeping Lilith clothed and Alastor from hurting someone.

Also Lilith: there's not actually a lot of empty warehouses in hell because even if they're not owned or rented out people will use them anyway mostly for drug operations