Four of us arrived at the Nacional on Dec.22 for four nights as part of a split package.Our room was huge but my brother-in -law and his wife had a small room, so if you stay there, ask for a room with a number ending in 25. This gives you a ocean/Malecon view to boot. Their room was 465 and the bath had a huge crack in it.
The hotel and grounds are very elegant and are steeped in history. Do take the hotel tour and don't forget to relax on the terraces in the evening supping on a few Mojitos.
We found a great little restaurant right across the street from the hotel entrance called Monseignors, Prices range from CUC 4(approx $C4) for a chicken breast dinner thru CUC6 for a whole roast chicken to CUC18 for an awesome Lobster Thermidor. The restaurant has a resident pianist who will play almost anything. I have never heard a better version of Gershwin's Summertime.He could sure play the Blues.
Two blocks east of the restaurant is a little open air bar called Sofia's. Here also the staff are really friendly and so is the resident band.In both places some English is spoken.
There is lots to see and do in that area and to get a good insight of Havana and indeed, all of Cuba and its people, get the book Moon's Cuba.
If you want to go to the old town (Vieja Havana) a taxi is cheap but the best way to see it is to jump on a horse and carriage.
Another place to go is the north side of the river. To get ther you will need to go by taxi (CUC 5). There you will find the huge statue of Jesus of Havana (carved out of marble, the sculpturor is a woman),Castle Morro (the lighthouse castle)and also the Castle of Three Kings in which you will see many interesting things including Che's HQ after the revolution.
My final tip is: the normal Cuban Peso, at this time is 25 to the $Can,but you will never see them.Tourists get the CUC , so you are basically paying 25 times the price that Cubans pay. But everything is really cheap. Mind you, the average pay of the better off hotel staff in Varadero only get CUC1 per day .If you give tips, don't give canadian coins, Cubans can't change them.
All-in-all, Havana and its people are great and we will be going back again because there is so much to see and do.