We stayed in the Palacio del Marques de San Felipe y Santiago de Bejucal in April this year and were very impressed. It had only been open just over 6 months, but everything was running perfectly; no hiccups. The staff are charming and very proud of their small hotel: this place has only got about 30 rooms; so you quickly get to know your staff: and they you.
It is situated at the edge of Habana Vieja in a pedestrianised zone right next to a gorgeous church with a tower which can be climbed for 2 pesos and which affords a nice view over the city. This view is obviously surpassed by the one from the roof of the Hotel Parque Central; but bear in mind: you don't have to be a resident of the HPC to visit their roof terrace.
For a visit to Old Havana this hotel is a wonderful starting point. It is on calle Oficios, next to Mercaderes: both very interesting streets to amble around to take in the atmosphere. The most important sights of Old Havana start on your doorstep and are all within a 20 minute walk; including the Hemmingway bars: I recommend the Bodegiuta del Medio above the Floridita. But they're both quite sexy in their own ways.
This hotel has got its own little roof terrace which is quite intimate. We were never interrupted while enjoying a gorgeous sunrise over the harbour.
Yes: I know you want to say you stayed at the Nacional or the Parque Central &c. But you can visit their bars and foyers and restaurants without having to fork out for their rooms; and I recommend you do visit these hotels precisely for their bars, foyers and restaurants. But have you seen the TripAdvisor reports on their rooms? Not that clever, eh?
We found the service to be excellent as were the breakfasts which were not of the buffet kind but waitress-served.
Our room was clean and comfortable: no complaints there.
We would certainly return on our next visit