Do you have a picture, even if it is from the real estate listing, architect's elevation drawings, or a pic of a similar fireplace? Hang items from the ceiling (you could install a contemporary ceiling mounted picture rail) Source: http://homihomi.com/pretties-christmas-fireplace-wreath-you-must-see/ You could use a stand for stockings https://www.personalizationmall.com/Fleur-De-Lis-Christmas-Stocking-Hanger-Stand-i50055.item?productid=18575&sdest=fprodcat&sdestid=152

The rug is from wayfair - 100 Percent wool and super soft!! But it was like having a house full of 10 white cats, oh my!! It’s much better now after about 6 months but for awhile I had to vacuum constantly. It’s worth it though for the price. I have a wool rug in our more formal Living room from a design store that costs over 3,000 and didn’t shed at all like this, but you get what you pay for and the quality of still very nice aside from initial shedding.

This is the fireplace from a distance. The floor is travertine. The other picture is the view from when you walk in the door of the back of the fireplace.

Think about furniture placement. You may not want to put the fireplace centered in the middle of the wall, as it appears your furniture won't be able to be centered in front of it. That bump with the 4' opening is for a door, I assume? Where does the door lead? You will need to leave that whole area along the stairs/living room wall open for a walkway (leaving 42-48" open along the wall would be ideal, IMO) to walk through the living room to the door. If you center the fireplace on the wall, the furniture facing it will need to be off center to account for the walkway. The window and door bump outs are going to be awkward to furnish/decorate around, I'm afraid. It looks like the fireplace wall is just under 17', but after accounting for leaving open space for the walkway, that gives you just under 13' wide of space to work with for arranging furniture in the 10' area (the length of wall with the 3 windows) in front of the fireplace. Or are you planning to put your couch/es in the area where the room widens (the second trio of bump out windows)? If so, how are you going to use the ~13x10' area in front of the fireplace?