We had a family of 7 stay at Youngji's place and it was excellent all-around. The space was spotless and the beds were very comfortable. Toiletries, condiments, and even some beach gear were provided at no extra charge. The location was just a few blocks walking distance from the beaches, the International mall, various restaurants, etc. Youngji was great at communicating and even gave us an early heads up about the parking garage's maximum clearance.
The only negative we could think of was the parking was a bit tight for bigger rental cars (minivan, SUV) but would be fine for a smaller rental car like a sedan.