The Salon Mitad Del Mundo in International departures at UIO Quito
is nice.
The lounge is spacious, the warm foods, deserts, and snacks are
tasty. It has comfortable cushioned seats. Laugh but the whole airport
has hard plastic seating in gate areas. Wifi is good and the call you for your departure.
Only minuses are the chaise lounge sleeping area is noisy and it is expensive compared to Ecuador's average monthly income.
Be aware that the terminals restrict access from Midnight to first flight.
Probably why they have a Layover Stay lounge across from walkway from main terminal building that looks nice from the pictures.