Very kind of you.

Sorry to say, but this will be our first ever experience with AirBnB. We found a place in the area we want which wasn't crazy expensive and was repeatedly favorably reviewed by other AirBnB users. That is precisely what we were searching for: i) area, ii) cost, iii) critical mass of favorable reviews.

I would have been open to a hotel chain, like Marriott, if I could have gotten a decent LNF rate plus a decent location. However, all the Marriott properties are located in areas which are distant from where we want to be, and LNF rates are not easy to get outside of the US.

Regarding AirBnB in Seoul, I generally favor the subway over taxis, so I only cab it when needed. Thus proximity to a subway station is, for me, another consideration.

As you would expect, the closer an AirBnB property is to "hotspots" like Gangnam, City Hall, etc., the more costly it tends to be.

Sorry, can't offer you more substantive advice.