Planning a beauty trip to Korea! Where's the best place to stay in Seoul?

Hello, I'm Waka. I'm planning a beauty trip to Seoul this fall and wanted to ask for everyone's recommendations 💭

I'm particularly interested in the Gangnam and Apgujeong areas. There are so many cosmetic clinics there, right? It's amazing how many there are just from looking online. But in reality, are they easy for foreigners to access? What kind of language support is available?

Also, I'm undecided about where to stay. Should I stay near the areas with many beauty facilities, or is it better to stay in central Seoul? I'm looking for recommendations based on a good balance of transportation, shopping, and overall convenience. I'd love to hear from people who have actually been there...!

I've been to Korea a few times before, but this will be my first time staying for an extended period specifically for beauty treatments, so I'd be grateful for any advice 🙏