If you get multifunctional nesting tables, you can keep the passageway clear and just pull out a couple of the tables ofr use as a coffee table. Here are a couple in the same wood as your floor and stools.

Coast To Coast Set of Three Nesting Tables - Reclaimed 39511 · More Info

Uttermost Bomani Wood Nesting Tables, Set of 3 · More Info

If you continue adding or changing up your room, here are some ideas as budget allows:

--Painting for over the sofa in a subject, style, and palette that appeals to you.

Large Abstract Painting on Canvas Modern Acrylic Skyline- 36x36- Grays, Blues, W · More Info

--Move the corner chair to face the sliding door for a more conversational feeling.

--Rug to anchor the space:

Kaleidoscope 504D5 Abstract Grey/ Blue Area Rug, 5'3"x7'6" · More Info

Chaos Theory Blue and Grey Rug, Blue, 5'6" x 8 · More Info

--Think about upgrading your TV system with long, low storage/bookcase across the wall. Ikea bookshelves set sideways are an affordable way to do this as are some of their storage pieces.

Wohnzimmer · More Info

. Or one of their storage pieces like this: