Upon entering, the Old Chateau appears to be old and abandoned. The first room encountered is the foyer, which has two flights of stairs both leading to the first floor. There are also four bedrooms that can be accessed to by traveling further up the first floor. In one of the rooms there is a television that is on and displaying a plain, white, flickering screen. There is also a portrait in another room; glowing red eyes appear on it that will stare at people when their back is turned and will disappear when faced.
What seem to be the ghosts of a little girl and a butler appear in a bedroom on the first floor and in the dining hall, respectively.
source - http://bulbapedia.bulbagarden.net/wiki/Eterna_Forest#Old_Chateau