For fans of point’n'click puzzle games, “Guest House” has a different twist to it with strange contraptions, Egyptian hieroglyphics and interesting music. More games of the genre can also be found at Lazylaces with “Rental House” and “Terminal House”.
to D @ comment 6, look on top of the box where you put the tube, there's another coin (or if you found that first (unsure if the order is set on the 2) there's one under her hand you can click and get)