This listing was in the working class district of Guindalera. It was a family friendly neighborhood with some great little restaurants and many public parks and playgrounds, close to a metro stop, all the things we were looking for. It was clean, and pretty quiet at night, good blinds to keep things dark.
Unfortunately there were a few issues. Firstly, the check in process did not go smoothly. We had to download an app for a phone to check in and obtain a digital key. They app is very glitchy and did not allow us to upload documents. I also asked for a physical key because we needed access without a phone. This was difficult to obtain from the host and required three different specific requests, after which we were required to travel to a different part of the city to obtain the physical key (pick up from their office) . With all of our luggage and a tired toddler this was not an easy venture. However, they personal staff at MitHouse was very accommodating in person. They also helped us work out the app on the phone. Then we traveled to the apartment and settled in. However, the digital key via app still did not work very quickly. In order to enter the apartment from the street, using the phone took about two minutes of waiting (after the app said the door was open) to actually open. It probably needs a good signal from that area and our phone wasn't able to open it quickly, but it did eventually work.
Also, it turned out there were some basic functionality issues with the apartment. Firstly, the stairs leading up to the second floor are falling apart. Tiles are broken and shifty when stepping, especially with luggage, but the elevator works well. Second, the washing machine seal is covered in mold and stinks up the whole room if left open. Obviously it hasn't been wiped clean or air dried when used - admittedly difficult to control as a vacation rental with high turnover, but it not ideal when doing laundry for your toddler. Third, the kitchen sink fixture basically was so loose it wobbled on the counter, like it was never tightened properly. Kind of dangerous, it could have broken or started to leak and then... who knows. Fourth, both bathroom sinks did not drain properly. After washing my hands the water took about 2 minutes to finally drain down. There is also a hole in the bathroom floor with a loose cap on it to access a valve. Not sure why this was ajar.
All that said, those are easy fixes for a great apartment with nice details like a new fridge, nice shower, nice blinds, couch, etc, and a great location if you want a taste of Madrid family life.