Robert Pattinson and Kristen Stewart returned to LA's Chateau Marmont last week.

They're trying hard, but they're not getting away with anything. With all the travel Robert Pattinson and Kristen Stewart have been doing in the last week, their private rendezvous are almost sneaking under the radar...almost. Witnesses say the Twilight two shacked up together at the posh Chateau Marmont on Sunset Boulevard in Hollywood last Thursday night before Kristen headed to Brazil and Rob took off to Tokyo.