I had the pleasure of staying at Marta's house when I visited Cienfuegos in January 2016 and she is the consummate hostess. Her house is super clean and perfectly appointed. It's walkable to all that the city has to offer. And if you need it she will find it. She was able to find me a masseuse. A driver. And lodgings at my next stop in Las Tunas.
The room has an attached bathroom, that's all yours and it has everything you need including hot water.