The apt is well located in the city center, clean and check-in is easy. Unfortunately on our second day construction started on the apartment above ours. This caused noise disruptions to my husband who was working remotely during the apartment during the day. The management was not aware there would be work done during this time and were very apologetic. Unfortunately, it made our trip in Madrid less than pleasant as that evening we noticed a smell of sewage and urine invading the entire flat. It made for a nauseating and sleepless night and awful next day. Carmen and Maria who manage the property where very fast communicators, and quick to troubleshoot, and try to rectify the situation by moving us to another apt on the first floor. They explained that the odor was caused when the constructions workers above left the sewage pipe open and that the "fecal fumes" from here were being sucked into the air conditioning system and pumped into the apt where we were staying. Not ideal during covid times in terms of sanitation as it's known that virus particles can spread through aerosolization. Rather than enjoying Madrid, I spent the next day packing up and helping organizing logistics while trying not to disrupt my husband while he worked. Despite our precautions in Madrid, eating outdoors, wearing masks, keeping our distance from others, the next day I came down with sinusitis that knocked me out for the rest of the trip, and I ended up spending it mostly inside resting. It's hard to say that those things were tied together, but the lack of sleep and breathing in fecal fumes could have impacted my immune system. The apartment was very nice, well located and management was quick and helpful. Unfortunately, our trip was heavily impacted by this unpleasant experience so I can't leave a 5 star review.