Simplify the following text for a Grade 7 native English-speaking person.
Original: Versace was murdered outside his Miami Beach home , the former Casa Casuarina , at the age of 50 by spree killer Andrew Cunanan .
Simplified: Versace was murdered outside his Miami Beach home , the former Casa Casuarina now known as The Villa By Barton G. , at the age of 50 by spree killer Andrew Cunanan .