It was all about a long room at the back of the house, once evidently a dining room, now with florid decoration of which most part looked oddly and out of keeping with the shabby and sparse furniture.
It was all about a long room at the back of the house, once evidently a dining room, now with florid decoration, which for the most part, looked oddly out of keeping with the shabby and sparse furniture.
I think I would prefer, "now decorated in a florid fashion’ to ‘now with florid decoration’.