I had a very pleasant stay. the apartment is small, but cosy. the location of the apartment in great!!! you can reach everything by walking. The area La Latina is amazing.
The contact to the host worked very well and quickly. I stayed in the apartment for 2 weeks to work remotely. the internet worked very well. two times in the beginning the wifi stopped working, but they took care of it very quickly, and after that there's never been a problem again.
The equipment of the kitchen is very basic, but with all the amazing restaurants around there's probably no need to cook that much on your own. supermarkets are close by as well.
I can really recommend the stay and would book it again when I'm coming back to Madrid.