My stay at Raul's house was definitely one of my best experiences with AirBnb. Spotless, bright apartment and very thoughtful guest (he left me little things like candies, shower gel, toothpaste...). Raul was not intrusive at all, but very friendly when needed. Since I had to work from home for an extended period, we were practically roommates for a while, but the co-living thing worked out pretty well.
The apartment is a 5-minute walk from the cercanías station and a 15-minute walk from the metro station, and it's very easy to reach the city center. At night, there are less people on the streets in the neighborhood, but it's still very safe. Many shops and bars and food places nearby, also cheaper than downtown.
All in all, an amazing stay!