All of these examples are wonderful!

I was going to suggest settee, as well. Mirror, drapes, lamps & side table-maybe small oval glass/metal coffee table. CL is a great place to find antique settee- the proportions are smaller- same with coffee table.

I had a front room like this in my last house- set it up as sitting room & we never used it. Changed it to an office & much more use. Still had artwork, antique credenza, and pretty rug-but had a purpose for our family. Your usage may differ.......

Do you want/need a library or reading spot?

A couple of cozy reading chairs, lamps, side tables and a bookcase would be nice -- if you want.

If you want a sitting room, the others have posted great examples.

@peppapoodle What is CL? @dyhgarden It could be used as a reading spot.

CL = Craigslist online.

The photos are all nice looking, but I would question whether you might not have a better use for the space. I would think of it as an office (desk, bookcase, chair), a library (wall of bookshelves to the left and/or back walls, couple of reading chairs with a table between them in front of the window), a room for crafts and games (round table and chairs, storage console or other cabinet). I have always been in homes where I am trying to make the most of space and add more function, so I have a definite bias. If you don't have a need for more, the inspiration photos above are a great start.