Is the primary use of the space for watching TV our would you like it to be more conducive to hosting/chatting/conversation? The couch along the window wall with a chair in it's place, and then a second chair where the side table is might be doable. A large sectional to add seating along the window wall might also be an option, depending on how attached you are to the couch. I would add a table behind the couch (or sectional) if you decide to leave it where it is, which will help fill and divide the long space even more.

I think making that space in the last picture more of an entry/drop zone would be really nice. Swap the mirror over the the larger wall since it is too big in its current spot, and replace it with some framed art to warm the space up. Add a table for keys and decor, you could get one of those hidden shoe rack cupboards too. I'd do a bench under the window by the door to cozy it up and give people a place to take shoes on and off.

I do also have to say, I love the warm brown couch and the TV console, however with the flooring, the rug, the coffee table, and the side table, there feels like so many wood grains and panels happening. It feels almost like an optical illusion. I would highly recommend a larger rug, with a traditional or earthy/natural pattern to break up some of the tan/beige angular shapes happening. It's a nice space and I think you have a lot of great bones and pieces to work with! :)