Piano room design-Acoustics Forum-Acoustic Fields Forum

I am not at all an audio or acoustic design expert, i know very little. I am a musician.

I will be building a new room onto my house specifically for my piano. I play mostly late classical and romantic music which frequently gets down as low as the lowest C on the piano, ~32-33 hz. I want to optimize the design of the room for sound as much as possible. Everyone on the piano forums seems to be focused almost entirely on the size of the piano compared to the room. To me this seems to miss the point that the wavelength of the sound is the more important factor in the dimensions of the room that the size of the piano. If the piano produces too much volume, I can always add some curtains or rugs, traps, or panels, but I can’t change the size of the room once its built.

Can anyone help me determine very basic dimensions to be able to get the most out of the whole keyboard? I am willing to compromise the lowest few notes on the keyboard, I can’t build a full size concert hall at this point in my life.

Should the room be rectangle, what ratio of length to width? Not a rectangle? What about ceiling height? Should everything meet at 90 degree angles? Or something else? Where should I place the instrument?

I am not sure if this is the right forum to ask these questions, but it seems like a good place to start. If this isn’t the right place, I am hopeful that someone here might be able to point me in another direction.

Thanks!