General Havana Information - Real Havana: Explore Cuba Like a Local and Save Money - page 107

ATMs in Havana
Most of the ATMs in Havana can be found in Old Havana, in the lobbies of large
hotels. If you come across a hotel that does not have a functioning ATM, the front
desk or doorman will always be able to tell you where the closest one is located.
The CADECA located at 257 Obispo (between Cuba and Aguliar streets), in Old
Havana, has an adjacent ATM which operates from 10am to 2am daily. This is one
of the most popular exchange offices in the city. But note that, in most cases, it
only accepts Visa credit cards for obtaining CUCs. If you have a MasterCard or
other credit card, you will need the assistance of a teller and will have to show your
passport as identification. The CADECA office is open daily from 8am to 10pm.