I came to Madrid with my girlfriend and a friend of ours and Jason’s place was the ideal place to stay!
The location is perfect, it is not in the center, which means its more peaceful and the pricing is good, but at the same time it is a walking distance from the center! Just 10 min from Atocha station, we ended up walking most of the times and rarely took the metro! When we did, the station was really close to the apartment and connects to Plaza de España and Sol, so you really can get everywhere easily.
The flat is not big at all, but it was perfectly fine for us. The beds were comfortable and sheets were clean. Bathroom and kitchen were also impeccable.
The communication with Jason’s team was spot on, and they were flexible with both check in and check out times.
In general, a great place to stay when in Madrid and looking to explore. Recommended, and definitely a place I’d be glad to come back to.