After twenty-one months of operation, Four Points Sheraton Havana continues to have perhaps the most restrictive reservation policy of any property located in the Republic of Cuba. The company has not commented as to the reason(s) for the reservation policy.

Neither the Office of Foreign Assets Control (OFAC) of the United States Department of the Treasury nor the Ministry of Tourism (MINTUR) of the Republic of Cuba require the restrictions.

http://www.cubatrade.org/blog/2017/4/28/why-does-sheraton-continue-to-have-the-most-restrictive-reservation-policy-of-any-hotel-in-cuba?rq=four%20points%20sheraton%20havana

On 27 June 2016, Stamford, Connecticut-based Starwood Hotels & Resorts Worldwide (a subsidiary of Bethesda, Maryland-based Marriott International) commenced management of the Hotel Quinta Avenida Habana, which was re-branded as Four Points Sheraton Havana.

Four Points by Sheraton Havana (SPG Category 6)
Avenida 5ta A 76 - 80,
Miramar District
Havana, Cuba

"Payment and Cancellations

Reservations for this hotel are prepaid and there are NO REFUNDS for changes or cancellation for any guests, including SPG members. Additional charges at the Hotel must be paid in CASH or credit cards authorized for usage in Cuba (Please note-most US Based Credit Cards are NOT accepted in Cuba—check with your individual financial institution)"

http://www.starwoodhotels.com/fourpoints/property/overview/index.html?propertyID=4531&language=en_US

Economic Eye On Cuba

Four Points Sheraton Havana Retains Most Restrictive Reservation Policy Without Needing To Do So

U.S. - Cuba Trade and Economic Council, Inc.