The Drum Recording Handbook) to find the best room placement:
1) It’s usually best to stay out of a corner. The corner normally causes “bass loading”, meaning that the low frequencies will be increased causing your kick and floor tom to be louder than the other drums. This can also lead to increased ringing and snare buzzing. That being said, don’t rule the corner out without trying it first since the extra fullness of the kick might be just the thing you’re looking for.
2) Find the place in the room with a nice even reverb decay. Pro engineers will usually test a room by walking around and clapping their hands. If the clap has a “boing” to it (a funny overtone), then so will your drums so it’s best to try another place in the room.
3) Ideally, you don’t want to be too close to a wall. The reflections (or absorption if the wall is soft) can change the sound of the kit. The middle of the room usually works best.
4) Ideally, you want the place in the room with the ceiling height is the highest. If the ceiling is vaulted, try placing your drums or acoustic instrument in the middle of the vault first, then move as needed.
5) Whatever you do, stay away from glass if you can. Glass will give you the most unwanted reflections of just about any material. If you have no choice because of the way the room or the band is situated, try setting up the kit at a 45° angle to the glass.