Kalina and Jesus were excellent hosts! Kalina reached out to me multiple times to see if we had any questions, she arranged airport pick up for us with Felix, and she was available throughout our trip to assist us with whatever we needed, including lending us a local mobile phone so that we could reach her.
The apartment is absolutely beautiful and very clean and comfortable. The living room area was very cool and breezy and we didn't even need to use the AC in this area and we loved sitting out on the balcony drinking coffee and rum and enjoying the view.
The ACs in the bedrooms work very well, the beds were comfortable, the water pressure in the showers were great, and the kitchen was fully stocked with everything that you could need to prepare or reheat food. We really appreciated and enjoyed the bottle of rum and water that Kalina left for us as a present.
The apartment is in a beautiful neighborhood (Vedado), just blocks from the Malecon, a WIFI park, Fabrica de Arte, El Cocinero, and other great restaurants. (I highly recommend Bar Mediterraneo in Vedado if you love fish and seafood.) Depending on how much you like to walk and your heat tolerance, you could easily walk to Hotel Nacional or Hotel Melia Cohiba for a drink or if you needed to change additional money.
Taxi rides to and from Havana Vieja are around 5-10 CUC depending on your bargaining ability and patience. It was a little challenging at times to get a taxi that could take us to Havana Vieja because not all taxis can take foreigners. You have to walk to the main road to find one. I recommend using a local driver and guide, like Felix who Kalina introduced us to, to learn about all of the main sights and points of interest in Havana, and to not have to struggle with trying to hail taxis.
I will definitely stay here again if I come back to Cuba!