ok, times up. bbloom came closest to the answers but not quite. here's the story:
by the late 60's/early 70's harry nilsson was recording and performing frequently in the uk. it, thus, made sense to him to buy a flat in london as a "home away...". since harry wasn't a full-time resident of the uk, he frequently loaned his flat (on curzon place in mayfair) to friends. one friend, mama cass eliott, died in his bed in 1974. four years later another good friend, kieth moon, died in the same flat, on the same bed. harry, understandably, wasn't keen on keeping his place, let alone trying to find rest in the seemingly fatal bedroom. fortunately, he was able to unload the curzon place flat, selling it to yet another friend of his, kieth and mama cass, pete towshend.
interesting "small world" story, eh. -kelly