LR window seat inspiration--but with thick cushion. (Note how backrest plane and then seat plane expand overall width without having to thicken the wall.) Napa Valley House by Steven Harris Architecture (Architect: Eliot Lee)
This built-in wood window seat takes advantage of the light from the tall windows and looks out onto the backyard. There's also hidden storage underneath the upholstered cushion. Designed by Moloney Architects.
This is the perfect place to put a pull out bed. I always look at those beds and think they're impractical because it's too hard to leave all of the open floor space needed for one but I'd happily do it for this library/reading space