Sounds to me like you were expecting a series of comments saying ‘wow, that’s amazing’, rather than any criticism.
Everyone likes complements, but complements don’t help you improve. Criticism does!
I like the concept (and I agree with you that a lot of contemporary arch vis is white minimalism and bare concrete), but I think this could be improved a fair bit in terms of both design and execution.
Design: to my eye, it looks quite chaotic, and lacks an elegant overall aesthetic. There’s a mixture of rustic ‘shabby chic’ (wooden floors, aged marble, un-trained interior plants), contemporary minimalism (glass walls, square leather sofas, un-decorated chrome), and then there is faux-antique (the Romanesque columns and tiling). I’ve seen a lot of expensive houses that look like this - it looks like money, but it doesn’t look tasteful, so it can come across as a bit ‘trashy’. Drug lord rather than aristocrat.
Execution: I would say it’s a bit over lit and over-processed - too much ambient light, and too much glow. The materials look like they could do with some more detail / roughness variation, and the furniture particularly doesn’t have enough contact shadow on the floor - so it looks like it’s floating.
I hope that helps - it doesn’t take away from the huge amount of work that has gone into this, nor any kind of commercial interest you might have had.