Location is excellent, go out of the main door and you're in the centre of Madrid, 100m from the metro station. The main bad points are that the kitchen was very under equipped so don't expect to make anything more than a sandwich. (There is one mug, no kettle, no hand soap, no washing up cloths, no hot water in sink etc). The main thing that let's it down is the cleanliness, the floor was dirty and had to always wear socks to avoid getting dirty feet. There was no cleaning equipment left otherwise we'd have cleaned the floor. There was also a noise every 30 seconds or so of water pipes vibrating in the ceiling, so was a struggle to get to sleep. Overall not great, but a fantastic location.