I'd put a couple of lounge chairs with an round cocktail ottoman/coffee table & a bookcase along the wall (to the left of the door in the bottom photo).

I like doublhoney's idea. Houzz contributor Janell recently wrote about ways to turn a larger bedroom into a beautiful retreat with cozy seating areas. Check it out! https://www.houzz.com/magazine/bedroom-seating-areas-the-perfect-retreat-stsetivw-vs~93045

seating area around the fire place.

I would definitely angle your bed so that the head of it is coming out of the corner of the wall. Secondly, a couple of sherpa chairs and ottomans would be perfect for maintaining a wholly comfortable, yet really chic feel. Pottery Barn Teen actually makes them, and when taken out of a room styled for a teen they offer a great look. An alternative to the sherpa lounger would be a cuddler chair. Here is one from ZGallerie. A big bedroom lends an opportunity to use dramatic colors that overwhelm smaller ones. An indigo blue would be stunning, yet still sensual enough for a bedroom. Lastly and MOST importantly, I would hit the local antique shops and find a big, rustic armoire. This will be the heart of the room. Have fun!!

OH---don't forget a big rug.