Just got back from my run last night. We spent the night in the DC lounge and because we were just doing the LIM-CUZ-LIM with no stopover in CUZCO we left our bags with the people running the DC lounge so we didn't have to carry them. They have comfortable couches or, if you are tall, you can pull two chairs together. They did not want us sleeping on the floor.

There is also an Ambassador's Club (not open 24 hours) where you can catch a hot shower but their hours are wierd (closed at 9am and opened again at 4pm).

There is a very strong fishy smell in the LIMA airport so I wouldn't have enjoyed spending the night outside the DC lounge.

We met eight fellow travellers on our journey. It was a total blast!