Which area of ​​Seoul is best to stay in for a beauty trip?

Hi, this is Hana! I'm planning a beauty trip to Seoul this fall, and I'm wondering which areas everyone stays in?

I've heard that Gangnam and Apgujeong have lots of hair salons and dermatology clinics, but what's it really like? Is it really convenient? Or are there other areas you recommend? I'm especially looking for places that are easy for foreigners to get to.

I'm planning to stay for several days, so I think accommodation is quite important. I'd like to hear opinions from people who have actually been there about things like access and the atmosphere of the area. It's my first Seoul beauty trip, so I don't want to make any mistakes! 😅

Also, I'd like to enjoy shopping and cafes in each area, so any information on that would be great too. Does anyone have any suggestions?