Seoul has one of the most efficient subway systems in the world
And it’s cheap! With most fares just W1200, transport expenses don’t need to figure that significantly in your weekly budget.
While the map may look like a dropped plate of multi-coloured pasta the first you see it, navigation becomes very simple quite quickly, particularly on lines that you use a lot. You can also download apps like Jiachul to plan your journey out for you.
Lexis Korea is located about 2 minutes walk from Gangnam Station, on the Green Line.
Hint: Check out the fantastic seoulistic.com to find 25 days out without ever getting off the Green Line!