We landed at 5am Korean time, which was 3am Vietnam time (where we flew from). I didn’t sleep well on the flight due to a nasty travel bug we’d picked up a few days earlier (more in that in a later blog post). I was tired and disorientated, but we made it through immigration, got our bags, and headed on the bus towards our guesthouse. We arrived, slept for 4 hours, and then caught up with some work. By the time the evening came, we were so tired and had no bearings in this massive city. We hopped on the …