Thank-you both for your input! I think I'm tossing up between putting the chairs in the nook or against the long wall. If chairs go in the nook, it's cosy and there's more walkway space as you said, Luke, for beanbags etc. However, what would I do with the 2m wall near the entrance? Would seating there be a bit odd? However having the screen in the nook would allow for a longer row of seating I think? So potentially more people could fit in, although those sitting near the door may have an obscure view of the screen. It seems like both options have pros & cons! We don't have anything that needs to go in, so to speak, although plenty of seating options and tables for drinks etc would be really great!

This article has a good discussion about distance from the viewer as well as height. https:/https://www.houzz.com.au/magazine/the-full-picture-how-high-should-your-tv-be-stsetivw-vs~88991249

I’m set up in our sunny spare bedroom. Happy with my spot as I have views to the street and a desk to work from.

Thanks Dreamer for spending your time looking for that gorgeous sofa. I have emailed Home beautiful to see if they know a little more about it. The ones you posted are nice, but you know what it’s like when you have seen something you love. Thanks again and stay safe