 The new design has a total of fifty five parking spaces for seventy-two rooms, with thirty-nine of them underground and the rest on ground level.
<meaning-changed>  The new design has a total of fifty five parking spaces for seventy-two rooms, with thirty-nine of them underground and the rest on ground level.
 The new design has a total of fifty five parking spaces for seventy-two rooms, with 39 of them underground and the rest on ground level.