Well, Korea is definitely a easy country to travel, quite recommended. Come soon as the roads and over-density is taking care of making it less appealing. While Korea has a different alphabet (not signs), many things are written in english. Hotels – or better, love motels – are easy to find, they use the same sign that in Japan is used for hot springs. The mattresses are very hard but the rooms are clean and adventurous (like our last with a round bed, this one with a half naked women in the door key). Transportation is mostly bus, very frequent, meaning about every 10/15 minutes between any two cities (yes, that often). It is quite cheap for europeans, room less than 25euros (for 2), meals less than 10euros plus drinks (beer is 2euros).
Particularities of Korea is that all their food is spicy (ok, 90%), but since my first visit in 2003, I see that now is much easier to find western food and bakeries (and chocolate instead of beans in the croissants); there are many, many shops. They are crazy about hiking and there are dozens of shops specialized in hiking (what we dreamed of it in Russia), many marked trails (but distances and maps still to improve).
On our first days here young people (<30) always start to talk with us, couple of times in the restaurant to recommend what to eat, translate the menu, help with the traditional way of eating something. This completely spontaneously. Their english is reasonable and their will to talk is great.