Carl and Rita's place is as as described and shown in the pictures. It has everything you'd need for a short - or a bit longer - stay in Madrid. And it is super well located in la Latina.
The communication was very good despite the fact that they were working a lot during the time of my stay: Carl was responding within very short time when I asked questions.
If I were to say a couple of negative things about the place, I'd say that since it is located in a rather narrow street, there's not as much light as one might expect from seeing the big nice window. The bed was also a bit too soft for my liking. Finally, opening the doors with the provided keys were a bit challenging at time, which could be a bit stressful for some people, but I'm sure Carl and Rita will look into it.