I see you have already a free model/scene online.
The rule as Lemonade CG and Achipps have stated do not only apply to commercial models that make you money, but also apply to models you upload for free. if your "Chair Showroom Interior Scene" contains models made by other creators and if you do not have their permission, it technically goes against the rules of the website.
If that model contains free models made by others, i personally would say it might be safer to take it of
After all, it would be a shame to risk your account getting banned for a free scene.