I stayed at Emilio's with two friends in November 2013. We stayed for a total of 5 nights (4 at the beginning of our Cuban trip, and 1 at the end, after visiting some other cities).
We had to climb up 3 flights of stairs to reach the lobby, where we were met by a kind gentleman who welcomed us and checked us in.
Our room was spacious and clean but the toilet didn't have a seat cover and the shower didn't have hot water. We didn't expect the best amenities when we decided to go to Cuba so overall, this didn't bother us very much.
Breakfast was absolutely gorgeous, especially when compared to some other casas we stayed at in Cienfuegos and Santa Clara. We were served fresh guava juice, coffee, buns, eggs and a fresh fruit salad - absolutely yummy!
Dinner is also excellent, cooked with love by the resident cook, who is always smiley and happy. The beans soup (with cerdo) was out of this world and the chicken was also very tasty - best dinner we had in Havana!
Location is perfect, a couple of streets from Obispo, the main road in Havana Vieja.
It is to be noted that when we came back for the 1 night stay, we were given a different room on the ground floor which had been refurbished to European standards - modern, sleek bathroom with hot water in shower and toilet seats. I think all the rooms are in the process of being refurbished at the moment so the standards are probably going to go up in the coming months. It is a bit of a shame, since the first 4 nights felt more adventurous (and gave us some funny travel stories) but I have to admit that it was nice to have a hot shower.
I should also mention that all the staff at the casa were incredibly nice and friendly. Fidel, the barman, is a good laugh. Very friendly team, wouldn't go anywhere else the next time I'm in Havana!