We stayed here as a step up from the casa particulars and hostals we stayed in earlier in the trip - we were homeward bound. THis is a hostal (small hotel) rather than private house.
It was a step up in terms the room and bathroom (large and clean) and indeed the breakfast was great and the team very helpful - all speak good English. The breakfast is very instagram friendly and very tasty. We weren't quite sure about the cake served in a scallop shell, sitting on a tripod! You get the idea...
The only thing we didn't like was the road/area where it is located, as its pretty dirty and a bit noisy - although much quieter late at night. As mentioned, we were already familiar with Havana and Cuba by then, but even then this area felt a little too edgy.
It is very well located to access the tourist areas, main squares, government buildings and local shops/China town. However, like lots of/most of Old Havana and Central, many buildings are falling down and streets very littered and dirty. Not a reason to stay away, but be aware. Note, other casas and hostals have the same issue.