Seoul Cosmetic Trip - Gangnam vs. Apgujeong, which is better?

Hello everyone! I'm Tuya, from Mongolia. I'm planning a cosmetic surgery trip to Seoul at the end of this year. I'm particularly interested in the Gangnam and Apgujeong areas. Would anyone who has been to these districts share their thoughts? Which area is more suitable for consultations and treatments? Is there really a difference?

Also, if you're interested in this trip, where could I stay? I've decided that I want to combine necessary treatments with my trip. I think staying in an apartment or a hotel near a commercial center would be good. I'm curious about what keywords I should use to search for accommodation easily.

If you've taken this type of trip before, what advice can you offer? How many days do I need to stay before and after the procedure? I've heard that the swelling and recovery period can sometimes be long. Can you share your good experiences?