Hi there! I have found this University of Essex link that has a word or two on Easo residences in Madrid under Accomodation #4. It actually is a trove of information for foreign students going to study in Madrid. Hey, it even has a good word on Madridman
http://www.google.ca/search?q=cache:akiY2ufC2ecC:www.essex.ac.uk/lang/yab/BREWDOCS/Ayab-current/YABPACK/Ypack023/YabpackDocuments/HostUniversitiesInfoDocs-yab4Series/YAB-IN-MADRID. doc+easo+residence+madrid&hl=en&ie=UTF-8
Good luck in your search.