She is the owner of a whorehouse in King's Landing. Her daughter Alayaya works in the establishment as well.
Chataya is a tall, black woman with brown eyes. She talks with the accent of Summer Isles.
Eddard Stark visits her brothel to see the bastard daughter of Robert Baratheon and her whore mother.
After Tyrion Lannister becomes the new hand of the king, he sends Allar Deem to the wall, which is in Chataya's favor. Therefore she accepts Varys's
request to allow Tyrion to use her daughter Alayaya, and her establishment to visit Shae.