The Green Party Frogblog waxes lyrically about Cuba albeit with the statement "While I’m not endorsing Cuba or Castro...", whilst noting that it has "an almost complete lack of democracy" (but not ever mentioning the complete lack of freedom of speech, no independent press, the use of mental hospitals as political prisons and its execution of political prisoners) it says:
"I’m always amazed that we don’t give it more credit for some of the amazing feats it has achieved, given it’s enforced isolation from the world. It has an enviable literacy rate and trains an astonishing number of doctors"
So why believe that? Who knows what the literacy rate is? In North Korea it is apparently very good too, Ceausescu's Romania used to proclaim great statistics for health, education and standards of living - all lies though, because that's what totalitarian states do. Are Cuba's doctors any good? Who knows?
As long as Cuba bans any form of free speech, free press and independent journalists investigating any aspect of life there, including interviewing local residents without them fearing reprisals - you can't really say much about Cuba other than it is an authoritarian one-party state.