Everything went perfectly fine! The apartment is situated next to the metro station and the concert hall we went to so it was a really great location. Easily accessible.
The host was super friendly, always available for all questions, explained everything we needed to know! Not even mentioning that we had bread, jam and coffee at disposition, it was really kind of them.
Will definitely be recommending this to anyone who'd like to go to Madrid and stay around this area! Thank you for everything!