Internet, yes it does exist in Cuba! It may not be as fast as you are used to, but patience is key! All the internet spots are usually located in parks so you can always turn over, and have a chat with your neighbor while your page loads up.
I had my doubts starting a blog in Cuba, but in truth it actually went quiet well and i am glad that it all worked out for the best.
When accessing WIFI you have two choices:
1.Many hotels have internet connection. The Habana Libre hotel does too. However this is a very pricy option as one hour of browsing costs 5 CUC ( at the Habana Libre), and is not necessarily faster then the internet that you can access in the park.
2. ETECSA internet cards. These are recharge cards that you can buy for 2 CUC per hour. You can either buy a 1 hour card or a 5 hour card. Once you have a card you can use Internet in the various hotspot parks that are spread out across Cuba. Cards are available at official ETECSA outlets ( make sure to go with your passport when buying a card), or you can buy it around hotspot parks from people who are selling cards for 3 CUC per hour. Usually you will need to ask someone, if he knows who is selling the cards at the park. Or the seller may just approach you when you are at the hotspot.
Some students during the summer school were actually happy about the lack of internet. To them this was more of a internet detox.
Internet in Cuba is seen more of a meditation( as you can see a woman meditating on the recharge card), in the western world disconnecting is seen as meditating and connecting with the inner and outer realness and beauty that is all around us.
However, the Internet card image of a woman meditating and connecting to the world could also just mean that you need to practice gratitude and patience with the speed of the internet, and to keep the mantra inner peace while clicking that reload button over and over again.
http://deutsch.havanamyway.com/wifi-hotspots-karte-havanna/– here they have a map with all the ETECSA hotspots in Havana.