My mum and I stayed here for 5 nights and we loved it!
The apartment is very clean and there was everything we needed and much more (fully equipped kitchen, hairdryer, shampoo, etc.).
It’s very well located too. In fact we never used the metro and just walked everywhere. But there’s a metro station very close if you need it. The neighborhood is quiet and not touristy despite being almost in the city center. It was very easy to find the place and check in.
The hosts are super friendly, they even sent us a list of things to do in Madrid.
Highly recommended! 7 stars!