Years ago a friend of mine was very similarly stuck.
She had newly built a house on family land to his shit design 🙄.
He had a shit opinion on everything and she couldn't
make any progress on furnishing the house.
They carpeted the house in strong colours with a small pattern, hideous.
He loved raw mexican type wood so they had loads of that, again hideous.
She refused to do one sitting room and claimed it as her own. Decorating it to her taste.
As people would visit, her room would be admired and his would just be looked at with a grimace.
It took 10 years for the house to be redone.
She never went into his large hideous sitting room as she much preferred her cosy space, and that was where she watched TV.
His space became the big playroom/den/ family TV space for their children for many years.
He doesn't sound so nice to live with when he is so insistent on his way.
Pick a room for yourself is my suggestion.
Drums in the bedroom is completely unreasonable too IMO.