I'm planning a beauty trip to Seoul! Can you recommend some areas and places to stay?

Hello, it's Hina 😊 I'm planning to get beauty treatments in Seoul this summer, but honestly, I'm unsure which area would be best. I often hear about Gangnam and Apgujeong, but I'd love to hear opinions from people who have actually been there...

This will be my first beauty trip to Seoul, so I'm looking for an area that has many clinics but is also comfortable to stay in. Is Gangnam really concentrated with so many beauty-related establishments? Or are there other recommended areas?

Also, if I were to actually stay there, would it be better to stay near the clinic district, or stay in a different area and commute daily... I'm curious about this too. If you have any recommendations on how many nights to stay, I'd be happy to hear them.

I'd love to hear opinions from fellow beauty trip veterans from overseas!