Absolutely great! We enjoyed our stay very much. It's a studio flat that lookes our on an inner courtyard so noises from outside are minimal. The flat has everything you need, you can cook, take a nice shower, devide the bed into two seperate beds. There is also airconditioning. It's in a great area, right down from the main shopping street. There's a Dia supermarket 150m from the flat. There are loads of bars and restaurants in the neighbourhood.
It's a safe area despite the graffiti, and also seems very gay friendly.
Patricia is a very gracious host, she replies swiftly and is available throughout your stay. She leaves a detailed description of everything and what to do on the fridge. She was very attentive to any difficulties if we had any. She lets you know how and where to go to before you arrive, so you won't have to search in vain.
The teeniest remark I have to make is: be careful not to shower with hot water and use the stove at the same time! It pops the circuit, cutting off all electricity. Other than that, the flat is very enjoyable. I would definitely stay here again if i ever visit Madrid again.