When Tod and Linc carry Greta to her room, they never leave the main floor and find the room through the hallway. The room next to hers is numbered 116 while her room is 258. When Tod delivers coffee later, he walks upstairs and the door (numbered 258) to her room is from the outside.
When the helicopter approaches in the beginning, you can see the pilot is bald. But when they switch to the view inside, the character of the pilot (Bruce Glover) has a full head of hair.