This apartment is great for a trip to Madrid as the location is very close to all the main touristic attractions. The host is nice and responsive. We found everything we needed in the apartment.
The only issue we had and that did affect our mood during our stay was that there was an issue with the lock/the key and the door would randomly block, which is obviously not a great thought to always have in the back of your head when travelling. Although it happened multiple times, I feel like the host disregarded the problem a little bit.
All in all, our stay was great, the apartment is in a great location and the hosts are nice and I am sure would eventually solve any problem :)