Great stay! Hostal Las Fuentes is a good option if you're on a budget and are okay with basic accommodations. Room was small but was fine for just one person. It was clean and the bed was comfortable, shower worked fine. Great location in Madrid - close to the metro stations and many sights are within walking distance. Some people complained about noise in previous reviews - I could hear voices nearby occasionally but it honestly wasn't that bad. You can feel the metro below a little but it wasn't enough to bother me. All the staff were friendly and helpful. Would definitely recommend staying here!