Jorginho has struggled to win over Blues supporters following a £57million move from Napoli last summer.
Speaking to ESPN, Loftus-Cheek said: "I've not had the experience of going to a different league and playing, but I imagine it's really hard.
"Learning a new language... it's probably an uncomfortable feeling, but credit to him.
"Most fans don't see how good Jorjo is because he's not eye-catching. He does the simple thing but it's so effective.
"For us as a team, he helps bring play together and everything goes through him.
"When we play well, Jorjo plays well. He's a massive player for our team.
"As an advanced midfielder, if he's getting on the ball a lot it gives me the opportunity to get the ball, and it gives me space because he sucks players in.
"He's massive for us, but also defensively he cleans up and he's very tactically aware. He's someone I've looked at to improve."