Hmm looks vintage! That detail is beautiful. Could you email the old owner of the store?

I found it here...but God knows how much it's worth... http://www.notey.com/@contemporist_unofficial/external/788254/volver-by-studio-14-for-terzani-raquo-contemporist.html

From what you have said, I think smaller separate pieces such as couch and chair(s) rather than a large sectional is likely to work better in the space and still allow for traffic flow. However, if you still have lots to do then don't rush to make large purchases. In the meantime, if your current sectional looks better pulled away from the wall a bit, then perhaps you could rotate the side table so that the long side runs parallel with the sofa arm instead of the wall. Would that help to stop it blocking the doorway and resolve the 'not quite right' placement?

Happy Easter to you as well, I would try your local second hand building material yard, old doors etc, they quite often have bits and pieces. Elraco is an online store in Sth Australia, excellent to deal with https://elraco.com.au/index.php/escutcheons-c-28_1288_1294?page=2&sort=2a