Good location and close to the main train station in Madrid. The place was clean. However, I was travelling with a large suitcase (coming from Australia) and there was barely enough room for my suitcase in the room. It was a tight squeeze. The room itself is nice, and very simple and everything is clean.
I did awake to an alarm which was loudly ringing in the house at a very early hour, which was extremely frustrating for someone who cannot sleep well. The alarm was turned off only after about 10-15 minutes by the host, which again was frustrating. There is also quite a lot of noise from neighbours when you are in the house, especially in the bedroom or the shower (which are the main areas you can go to).