"What I said applies to you too, good sir," Iollan tells Calix with a very momentary pause in his walking pattern as he steps a bit to the side. "Don't let him recruit ya."

"Is he really that passionate about books?" Germaine asked (about Hitan), as if she hadn't seen his attitude back in the teacher's room.

Germaine nodded along to the first part of what Iollan said. Then she stopped to look at him with mild disbelief showing on her face.

I guess they're probably at the gym doors by now?

Calix asked, "Oh? Is Hitan married to a lady in the school?"

Instead of going through the doors, Apollo runs into the wall. He blinked a few times before talking to the wall awkwardly.

"Huh! Well, sorry Mr. Wall! I got lost in space again!"

"Oh, a girlfriend then?"

They would probably be weirded out.

"Oh? A romantic crush then?" Calix wondered.

"Love can be a good thing..." Germaine mused. "Good for him," she ended brightly.

Calix slightly nodded, thinking.

Between the time Apollo ran into the wall and now, he had entered the gym.

The doors to the gym had been left open. If Iollan were actually hoarding snacks in there, he does a really bad job of hoarding.
The wooden floor of the gym seems very polished and clean, but there are no cautionary signs in sight. Presumably, that means it's already dried. The lighting in the place is nice and bright, too, but not too bright. There's a rock-climbing wall on the opposite end and a few carts with equipment in them pushed against the wall, perhaps to decrease the amount of visible space taken in the gymnasium. 
"Everyone, welcome to my lair!" the physical education teacher enthuses. 

Meanwhile, Iollan eyes Apollo's footwear. Actually, he eyes everyone's footwear. You know, since it'd be a horrible idea--and an irresponsible one--for him to bring in someone wearing glass slippers into a shiny polished gym. Bad for both knees and floor. But he reckons he would've seen glass slippers...but anyways, just in case.

Germaine focused on the room's general neatness. The clean floor, the good lighting...she nodded silently while looking around.
She's wearing black sandals, by the way.

Apollo answers a little too quickly. "Yes! Uh, please. Yea."

Apollo's eyes light up excitedly. He is amazed by the curtain lifting seemingly by itself.

What's there to describe about a rock-climbing wall? Well, it's supposed to be prestigious. The narrator has no idea what one of those look like. But it's clean, and it looks new. For the second one, it's not really. At the very top, there's kind of a handle sort of mechanism, probably for activity-related things. 
The rocks are nice. The narrator will give it that.
Iollan winks at Germaine in response. Uh, in a non-flirtatious way. For some reason, the narrator always feels the need to clarify on actions like that.

"If you want, we can come back here later," Iollan tells Apollo. "I figure it'd be fitting to give the wall a test climb. But I don't want to waste Germaine's and Calix's time at the moment, especially since they would probably be tantalized by you climbing while they have on unfitting shoes for climbing," the teacher observes.