So I recently discovered that I could access the rooftop of my building. Although it takes sneaking up two flights of access stars and then onto a raised helipad to get there.
Sunset makes a nice time to watch out over the city, though I have yet to be up there early enough for sunrise. Bangkok is a sprawling city in all directions. My building here in Pinklao is about 3 km from the old center of the city, Rattanakosin, an artificial island made to house the royal palace.
For more of a closeup of my neighborhood, see this post.