It surprises me that we are inundated with "tanning centres" where you can drop in and brown off while giving yourself skin cancer - but there don't seem to be more benign equivalent "light box" rooms, which we can visit for an hour or so in the depths of winter and relax in bright surroundings, maybe reading the paper or listening to some music.
They could be annexes to public libraries. Or pubs for that matter. "Fight SAD with a Happy Hour!!"