Our group of 3 stayed here for six nights and really enjoyed it. The flat is very quiet even though the street out front can be loud and busy at times. The beds were comfortable and we had plenty of hot water. The kitchen had only basic tools and no cooking supplies (no salt, oil). Tip: the Corte Ingles on Plaza del Sol has a great grocery store in the lower level!
If you are working remotely, know that the wifi speed is very very fast, so we could have a video call at the same time two others were downloading files without any issues.
The host responded quickly to our questions, and was able to make a last-minute change to our checkout date.
I would rent it again.