I would give more than 5 stars if I could. Nelly and Alejandro were incredible for the entire duration of our stay with them. In fact, we extended our stay in Havana for one more day because we were just having way too much fun and had fallen in love with them and their home.
The house itself is stunning. It has been tastefully restored. The rooms are large and spacious with all the amenities you would need for a comfortable visit. Given the fact that the casa is smack dab in the middle of Havana and all the attractions you will want to see, La Casa de Concordia is an oasis where you'll be able to get the rest you need to take on and recover from the city.
As others have mentioned, you HAVE to have one of Nelly's breakfasts. Its pretty much your own personal buffet spread. I'm naturally not a breakfast person and I had one everyday I was there. You also can't beat the price for flavour of lunch and dinner at the casa as well.
What truly makes this place truly special though are the people who work here. Nelly and Alejandro went above and beyond for us. They made recommendations that turned out to be the highlights of our trip there. They also make sure you have access to someone 24hours a day. If you have a 4am hung over induced craving for food, one of the night staff will be able to make a recommendation. The personal touches really make it seem like the home you wish you had.
All in all, i would enthusiastically and who heartedly recommend this Casa. It made our trip feel like we were visiting long lost family members.