I wish I could go.

A few years ago I spent 5 days in Seoul. With my Korean friend I ate my way through the city at restaurants where english wasn't required.

Have a good trip. My favorites were mandu chi ge (dumpling tofu stew - ordered medium for me), Bing su (shave ice and ice cream) with fresh fruit not the Lotteria version, and dong dong ju (rice wine) with pancake appetizer.

If look for authentic cheap accomodations that is centrally located look at
www.friends-house.com.
Beds are traditional tatami mats so if you're looking for a beautyrest this isn't the place for you.
The bus from the airport runs to within a 5 minute walk. The trickiest part is finding it the first time. The woman who was running this place speaks a little english. I think many years ago she lived in US (Texas I think).

My friend was surprise at the room I'd found. There were 2 shared bathrooms with full bidets. If your lucky you'll get traditional soup for breakfast because it was yummy. Most days it was standard eggs, toast, lettuce/tomato salad.

Mmmm I'm going to have to go find some kimchi now.