Quote from [HP]Also, many times creepy means the feeling of being stuck in someplace small. Those windows give you a sense of freedom and kills the creepy look, fuzzy them up or board them with planks.
Given the visible sky outside, my impression is to be on a (very) elevated floor, so not much a route of escape.
Anyways, it's a good point; to prevent escape there could be bars at the windows... and one window could be broken from outside, enriching the scene with details like broken glass and wood, a curtain fluttering in the wind, plus giving the impression something gotten in. (I'm kinda projecting the scene in how I pictured Dracula's castle corridors, particularly the chapter when Harker looks for an escape through the high windows and sees the vampiresses clinching on the walls.)