I wouldn't put another chair in front of the fireplace. You have the ones by the window to watch tv. If they swivel even better. A sectional is great but it would also cover the fireplace. I think you only have three options there, a sofa that has a chaise, a long ottoman (it's not for tv watching) or two chairs. Not full chairs, wooden chairs pretty ones that are open and wouldn't block the fireplace. For the comfy recliner, there is another thread right now asking about recliners. Check that one out. I posted the link to the la-z-boy website. They have alot of recliners that don't look like the old type. They even have wing chairs that recline. You could also get club chairs. OK I just had another idea. If you do get swivel chairs, as long as they are not monstrous, you could put them kinda angled in front of the fireplace. That way you can face the tv or the fireplace. But personally I would probably go with the nice chairs. Do you need seating for entertaining?

Your dogs are cute photobombers! I adore your wood walls. I think to arrange the furniture best you will have to ignore the window seat. Does anyone sit there? What in the room stays? What can go? Is the focal point the TV, the fireplace, the view or multiple focal points? If you post a sketch of the room with measurements and placement of doors, windows, fireplace, ladder etc...and measurements of your furniture I can work up several layouts for you.

Do a floor plan and make the smaller angled end of the room the dining area. As is now the table and chairs are wasting a lot of precious space. You can leave the t v where it is. With an app, have the screen become art work, or a simulated fireplace…. Put a sofa on the solid wall with floor lamps, sleek coffee table, with a colorful rug under, and two small swivel chairs to complete the vignette. Swivel chairs are valuable to your space, as they can turn toward both the sofa and the t v.

Congratulations on your new home! Your fireplace hearth is likely 18-21" deep and the step 10" leaving you only approx. 8 1/2' to create the desired cohesive seating area around the fireplace you desire. If you were to float furniture facing the fireplace and found a shallow sofa of 36" depth and left the 3' of flow/walking space behind it that would leave you approx 29" of space in front of the sofa until you hit your hearth. Sadly due to the depth of this room and the length and the other factors listed above it doesn't lend itself to an arrangement around the fireplace. Placing a TV above the fireplace would mean anyone viewing it will be watching it from the side. Your friend here is going to be the swivel chair, I would do 4 of them two on each side flanking the fireplace. I would think of this room for entertaining and conversation. The wall the sofa is currently sitting on I would do a bar wall. I pictured a modular one here that can be added or subtracted to. Having height is a good option since that wall is your largest feature wall. I would flank a round coffee table with four swivel chairs on each side. If you want a TV over the fireplace (although I think its crying for a wonderful piece of art) you your at least turn the chairs towards the fireplace Anchor it all with a 8 x 10 rug add some cocktail stand tables between chairs. I chose these because you wont have room for much more since you wont have a lot of table space I would install a nice lighting fixture over the round table centered on the fireplace to bring in lighting I would dress the windows as well as the slider with some nice neutral drapery panels. Mount them as high as possible and hang them so they are 1/2" off the floor.