If you are looking for accomodation in Havana, I highly recommend the casa particular de Silvia. I also recommend that you stay in a casa particular in general. This helps cubans directly and you get a much better idea of the culture and the people.

Silvia's house is located in Miramar-Playa neigbourhood. This is close to the 5th Avenue and near the sea. The house is very clean and comfortable. They have a very beautiful patio with orchids, a hammock and orange trees. We had plenty of privacy as the family lived at the other side of the house. Our hosts Silvia and Flores were great. They were very hospitable and very helpful. We were given all the information and support we needed to customise our trip, taxis and other accomodation in various places in Cuba. We really enjoyed our stay there.

Prices are reasonable 25 - 30 CUC per night depending how long you stay. You can reserve the house using this web site www.cubarenta.com.
Their phone number is [--] more