Betty was a very attentive and kind host and the room and bed was comfortable. She also arranged to have locks put on the room doors which was nice (although I didn’t feel uncomfortable without it earlier in my stay). The couple of other Guests staying in the apartment were all polite, respectful and quiet.
It’s a great location for a more local feel and next to the extremely enjoyable Retiro park, which you can walk across in 15 mins to various top attractions of Madrid, including the Prado. There a easy bus connections to take you to many another parts of Madrid centro that you’d want to go.
The room felt a little chilly at times as the heating wasn’t very adjustable but it still was ok. I think the knob on the radiator was stuck from the paint. I work remotely, but I did so only a couple of days over my stay since it was thanksgiving week, the wifi internet connection was not always the best - just in case your work needs really strong connection.