Of course it's upstairs. The half-elf is really, really glad they took shortcuts, and managed it so far together, because he doesn't think Inigo can make it up with his own strength, really, and that's a hassle and a half of a staircase. Alright. Deep breath.

"C'mon. I'll carry you th' rest of the way," he promises Inigo as he shifts under his arm, pulling him slowly to hitch his friend onto his back in a piggyback ride. He's very careful to settle the weight properly, so that he can brace against the stairs as he climbs in case it gets to be too much for him. He should be able to make it, but--

"Get the door?" he asks Tidus instead, nodding towards the steps. That's gonna be a stretch. Deep breath again, and Esteban is ready, bracing Inigo's arm around a shoulder and holding him up as best he can.