Internet access in Cuba - WI-FI

This is an issue, which is going through a lot of changes at the moment. When we traveled to Cuba, WIFI was already available not only in most hotels, but in the main squares of most cities, and sometimes also in other public places.  

To connect to internet, you have to buy a card worth of 2 CUC at one of the ETECSA offices (the national phone company), which gives you 1-hour internet access. There are also 5-hour cards for 10 CUC. You have to connect to the network of ETECSA, launch the browser and then introduce the user name and the password found on your card.