Tamarindo is in Costa Rica. Located on the Pacific Coast, Tamarindo is a popular destination for couples and families looking for a good time. With spectacular beaches and rainforests, Tamarindo is the epitome of everything that Costa Rica prides itself on.
However, if you are expecting to experience the real Costa Rica then Tamarindo is probably not for you - it's something of a tourist trap geared towards people from the US, on short vacations, and prices are high (comparable to US and Europe) with rarely the quality to match.
Tamarindo has become a magnet for surfers and blue water sport fishermen, with a sport fishing fleet of talented and conservation oriented captains who are the pioneers of the Pacific coast.