Phasecorrect , there is never a straight answer. No two rooms are the same.
Since bass waves can easily travel through walls, some of the interference
patterns in your audio room may result due to waves reflected by walls of the
neighboring rooms.
To determine the best place for the speakers, i.e. that excites the minimum
amount of room modes, I recommend to place the speakers agains each of
the walls. Of course, the position of the listen chair is also critical, i.e. make sure
you are not siting in spots where you have destructive (no bass) or constructive
(too much bass) interferences .
If you have the possibility to do this, you would be surprised at how significantly
different the bass is when going from on wall to another.