Agreed that the Starbucks is probably the most comfortable place to wait out the overnight layover. The food court around the corner also has a lot of seating, but with cleaning crews coming through and stiff metal chairs, it's a far inferior choice.

The on-site Ramada looks decent, but when I was planning our overnight layover last June, I was shocked at the prices that hotel wanted for a room. I suspect that a decent amount of its business comes from folks looking to avoid sleeping in the airport, and the rates reflect the hotel's on-site monopoly status.

Finally, I think seven or eight hours is enough time to get a sense of Lima -- in fact, that's exactly what we did. Friends who live in Lima picked us up after our morning CUZ-LIM flight and showed us around town before dropping us back off at the airport for our late-night LIM-JFK flight. For me, that was more than enough time to see Lima's highlights, get lunch and dinner, and we had the flexibility of their car, knowledge, and a place to store the luggage. Might be tough to do on your own, though.