hi, i am an expert 3d designer, i used to work in an architect's firm doing what you describe. i don't have a lot of experience in internal design, mostly i did outside works, but i am very quick and skilled.
I am new on the site so i won't charge a lot, i need the good reviews. I am available for a long time partnership.
Contact me for portfolio and details, i am not a bot like probabily everyone else.
Anyway, i use archicad software, i can render up to 5k resolution and i have limitless supply of textures and materials.
If you want i can provide a free sample to see if you like my style and all, and then we can discuss about it. Have a nice day