He could recognize the sign of someone worried about what was going down around there. Starting here made sense to Adrien, who didn't want to just jump into things and help out for the first person he saw. He was trying to be careful, while being a superhero as he could.
"I'm here to help whomever I can. This kitty doesn't eat rats, but I'll keep that in mind." He winked, green eye blinking down a little playfully. "Let's go then! I found someone who does need help and that's all I wanted."
Keeping up the pretense that he just arrived at the hotel and wasn't a secret guest, Adrien added conversationally, "Heard there was some sort of trouble here and at least one Parisian is here, so had to come and help out. Rats, huh? Anything else?" He ran forward, baton out and ready to fight whatever they saw.