Coto 47 Airport (OTR) does not have a lounge. It is a small domestic airstrip in southern Costa Rica, near the Panama border, built to serve short regional hops rather than any kind of transit hub, and the honest picture for anyone searching coto 47 airport lounge is a basic airstrip terminal, not a premium waiting space of any kind, so plan accordingly before you fly.
For a fuller airport experience, San Jose's Juan Santamaria International Airport is Costa Rica's real gateway and the realistic comparison point, carrying the country's international traffic and a wider range of amenities than any regional airstrip in the southern zone. Travellers with airline status, a premium ticket, or a qualifying card program should expect more options there, though confirming specific access and hours before you travel remains the safe approach anywhere in Costa Rica.
The reason Coto 47 itself has nothing close to a lounge is straightforward: domestic service here runs on small aircraft operated by regional Costa Rican carriers, flying short hops that connect the southern Pacific zone to the capital rather than the kind of jet network that supports a lounge business. These flights typically use light single or twin-engine aircraft carrying a handful of passengers at a time, with quick turnarounds and minimal ground infrastructure, so a basic check-in counter and simple seating area cover the airport's actual needs.
Back at Coto 47, plan your pre-flight comfort around the airstrip's simple seating rather than a lounge, since the light-aircraft network serving this region was never built to support one. Treat San Jose as the place where a fuller amenity picture actually exists, and confirm your specific flight schedule directly with the operating carrier before you travel, since small regional airstrips in Costa Rica's southern zone can see service changes with limited notice.