Treating the ceiling and floor, who else has had great results?

I have not specifically treated the ceiling, and think that would be a tough to sell with my chief decorator/LOML. However, there’s a textured ceiling, and two ceiling fan structures that may help with some diffraction....perhaps I could suggest a couple of well designed decorative medallions around them.

The floor was easy, with thick wall to wall carpet. The suspended floor underneath...not so helpful, but I bet I could get away with a few extra lolly posts in the crawl space below.

It's not ceiling/floor, but the large fireplace structure on the wall behind the speakers seems to offer some diffraction help. I’ve been bugging her about installing some book cases to further enhance that effect. We shall see!

I have 3 24x48x6 bass traps on the ceiling above my listening position. I also plan to hang 2 diffusion panels above my speakers. 

I use 4 (2ea side)Vicoustics Wavewood panels at 1st reflection point on 8’ ceiling. Very nice improvement.  Got rid of the drywall glare and opened things up. I like the look too

"No, a rug won’t help your room's reverb problem"

https://darko.audio/2025/02/no-a-rug-wont-help-your-rooms-reverb-problem/

This is my studio room. Double clouds, full reflections covered. Built most of the panels myself with Mike Major at gik acoustics doing a 3D mockup of my room before I built it and filling in with diffusion absorption Alpha 6A panels and scattering panels. I’m right at about +/-3 db from the listening position from 20 hz to 20 khz (besides a bass boost I added of about 6 DB as I mostly mix electronic, pop and hip hop stuff and need to feel that low end) with minimal EQ. RT60 and waterfall look amazing.

I’m considering treating my living room right now. It’s a fairly large open floor plan with 9’ ceilings. Sounds good right now but going to be doing some 6" or 7" panels for first reflections on the sides and pending WAF, a cloud or two for the ceiling.

The floor can be carpeted or hard. If the other reflection points are treated, I’ve heard it doesn’t really matter much. Over damping is a huge issue. I went with carpeted floors because that’s what I like. I do recommend doing a rug if you are missing your first reflections. It definitely helps to control excess treble ringing but pales in comparison to a fully treated room!

https://freeimage.host/i/3dXWOZB