We had a lovely time in Madrid staying in Alicia's apartment. It is spacious, clean, full of light and very comfortable.
Other reviews mention the noise from the neighboring bars, and this is not exaggerated. It is loud and stays loud very late. So if you are a light sleeper than this might not be the place for you. I did not have a problem sleeping and the noise was just a reminder that this is a real city where people live, work and eat. If you want to experience Madrid this is part of it.