The following websites offer a wealth of information on Santurce:
NYTimes - Santurce Arts Mecca
The New York Times featured an article on March 4, 2011 - "Santurce Section of San Juan Aspires to Be an Arts Mecca".
Good overall view of the emerging arts district that has gotten even better since the article appeared.
This site has forums on urban redevelopment that include several forums on San Juan, Santurce and planned development. Many of the buildings planned during the 'boom years' will never be built, but it shows the imagination that Santurce inspires. The photo is of the proposed but never built 'Graft Tower' eco-hotel, pod residence and vertical farm!