Short term renting/house sitting anywhere in Korea

Hello everyone! This is Bhumi from Romania.My 2 friends and I we travelling in South Korea for the summer. We are currently in Seoul searching for a house/apartment in Busan or anywhere else in Korea. We are open to anything - house/pet sitting, rental. If you or someone you know can help us with any information, do let me know in a message here on facebook. I also use kakaotalk. Thanks for consideration ***