Costa Rican properties utilize the same 120V 60Hz electrical sockets that are found in the USA and Canada (accepting two-prong flat connector plugs as well as three-prong connector plugs including an earth connector). Some older properties offer only two-prong sockets, however newer and renovated builds are typically equipped with modern three-prong sockets (ideal for laptop cables).
If the hotel you are staying at offers two-prong sockets in the bedroom (or living room, if your room is a suite), check the bathroom for a three-prong socket. Some older properties will include one three-prong socket per unit, and nearly every time we searched for one, we have found it in the bathroom.
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