I know it takes up valuable floor space, but what about an indoor swamp cooler? We bought one about 4 yrs ago for above garage, master bedroom. It has a detachable tank that can be filled from the sink or shower. And, does a pretty decent job of cooling our bedroom when the temp gets too warm up there.
https://www.amazon.com/s?k=portable+...b_sb_ss_i_4_14