It's our living room, about 4.5 metres by 5.5 ... 2 seater listening sofa is facing the speakers but I have a longer sofa also on the left and a fireplace and record racks on the right. No TV thank goodness as I don't own one.
The sofa arm is well below where the drive unit is, which in turn is pointing into the room ... I don't hear the sofa as having much if any effect, sounds much the same as similar Tannoys in two previous living rooms (as plenty AoSers who have been round could attest I'm sure). That's one of the many great thing about Tannoys, single point source at ear level. Might be in trouble with lower-set speakers or with a speaker that had multiple drive units with some set below the height of the sofa's arm, but no issues as things are currently.