We loved Cristina's cozy apartment! It's centrally located to many of the the must-see sights in Madrid and the metro stations. It is also literally across the street from the Senate so security was never a concern. Cristina offered to let us drop bags early and met us to provide the keys and instructions. She was also kind enough to suggest really great restaurants nearby (La Taberna Real near El teatro was our go to spot). Check-out process also was very easy. Would highly recommend for anyone who is looking for a clean comfortable place to sleep while visiting Spain!