Charle's place is located in the very centre of Madrid - it takes only few steps to get to Gran Via (said to be a Madrid's Broadway) and only few steps more to reach Puerta Del Sol or Plaza Mayor. And the metro station is literally next to the building. If you are keen on walking trips around the city - there is no better choice. Every, I mean every of main attractions is within walking distance.
The place itself is clean, cozy and well-equipped. We had the Orange Room and it was very comfortable. Our hosts, Giselle and Nano (probably the cutest little creature you will ever meet) are great! Thank you, guys, for everything! If we happen to visit Madrid again, be sure that we will call you!
And, last but not least, some people said the neighbourhood is noisy. Well, if you visit one of the most lively places in Europe, don't expect silence. ;-)