>>4375176I would consider trying the Sigma 24/3.5. You don't need large apertures for your work and from what I just checked its distortion isn't too bad (the 24/2 was much worse it has BARREL distortion somehow). Fixing lens distortion in post is like two clicks and you should be able to set up a lens profile to do it automatically.
I don't know how much use T/S lenses have indoors but there might be something there I guess. Your shots show some skill but as
>>4375184 observes you have to get out of the corner. I'm going to link you to a really good guy on youtube who talks about architectural photography. Check this video out and look up his one on key compositions. It's super important stuff.
https://www.youtube.com/watch?v=jVRR7_pgn0E>>4375177I know you're just posting examples for the sake of illustration but for what it's worth here the 35mm lens is perfectly adequate for showing off the room. Are you on Sony crop or full frame?