I was in 5004 which is a 1BR but there are 2 studios right next to it. This was the daytime view. I did watch a few fireworks from there but didn't take any pictures:
High floors rooms like 5032 that face towards the main pool will also face towards DHS as will several of the rooms looking towards the quiet pool. You want to request a high floor though so you don't end up with trees blocking the view. Here's a link to Touringplans room view locator where you can take a look at some other views.
https://touringplans.com/hotel_maps/disneys-boardwalk-villas
It's an interactive map so just click on the building and then select a floor. Then you'll be able to select a room and usually there are pictures from that room or from ones close by.