The interviewer wants to know that you can honestly say your co-workers enjoy collaborating with you. Select a few positive and unique keywords that truly define your work ethic.
Some great words to use:
"I know that my coworkers really respect my work ethic. If I had to guess how they perceive me, I think they would say that I am a reliable person, an encouraging teammate, and a strong mentor."
"I believe my coworkers would describe me as personable, reliable, and easy-going. We all seem to get along great because we work off of each others' strengths."