The way a room feels has a lot to do with how much natural light gets into it and the orientation of the windows. If the room has a southern exposure the sunlight that comes into it will make it bright and warm. It will also fade your curtains and carpets at a quicker rate than other orientations.
A northern exposure provides more neutral light, which remains fairly consistent throughout the day. Artists’ studios have traditionally favoured windows or skylights facing north as this neutrality bears less influence on their painting. Eastern exposures bring the morning light, which has quite a different hue to the evening light from the setting sun in the west.
Always take the position of your windows to the sun into consideration when choosing colours. The same colour will look distinctly different in rooms with different exposures to the sun so it's worth using sample pots to test the colour before repainting the whole room.