Stayed here with my sister when she visited me while I was studying abroad in Madrid. We picked this apartment for the great location in Malasaña and unique style and decor. The apartment has a very cool antique vibe with the decorations and old building which we loved. However, our stay was seriously impacted by the odor of the apartment, coming from the bathroom. Upon check in, Carmelo's son mentioned that we needed to close to the door to the bathroom when we shower because some people complain about a musty/moldy smell. We didn't really notice it at first but after being the apartment for 15 minutes the smell was pretty horrible. We avoided using the bathroom at the apartment our entire stay, we brushed our teeth in the kitchen sink and even went and showered at a spa in Madrid to avoid using the bathroom. They are aware of the situation but I'm not sure what all they can do, I'm sure part of it is just that it's such an old building. I guess the weird moldy smell is something you have to deal with for a unique and antique style apartment but we were really just not prepared for it and it's severity and it unfortunately made our stay significantly less enjoyable.