Getting a big truthful soundstage is difficult in smaller rooms and where either the speakers or the listener (or both) is too near to the walls, resulting in reflections that break up the soundstage.
Padding out the walls too much is one answer but this leads to my reason for posting here. Removing room reflections etches the image and makes it more like listening on headphones.
One answer to the small room problem is to migrate to headphones.