This apartment was exactly what we were looking for. I was in Spain for surgery and this flat was calm, well-equipped and comfy for my 17 day stay. The hosts were very kind and quick to respond and the flat had everything we needed in it (except a kettle but that's ok!). It's about 40 minutes from the centre of Madrid, but is a very easy journey in on the Metro so that wasn't a problem for us. It stayed cool during the day, but this does mean washing/towels dry slowly and there's no dryer.
Light sleepers: please note that there are a quite few background noises in the house (such as pipe/water noises when someone in the apartment complex uses their shower etc) that might bother you - I slept through them.
The area is really lovely, and there are a lot of local bars and cafés you can enjoy and the local supermarket is a couple of minutes walk away and well stocked.
Overall, I am very happy with this apartment and can absolutely recommend it to others. Thank you!