Not many fields, and risky flying.
Civil airports at Quito and Cuenca in the mountains and at Guyaquil on the coast. Military bases at Taura and Manta. Variable and sometimes dangerous weather. Don't expect top class infrastructure in eg ATC, Weather forecasting and SAR. I would choose Guyaquil unless you know someone with a private strip.
Avoid sopa de manguera and ceviche de pescados and tread carefully with las monas.
Dick