Yea, the issue is that other than the potential usage of AI art in these random generator games, there really isn't much to see here. The wear and tear on both the girls and the rooms kind of double fist you and the current iteration of the game is very lacking.
The core mechanics issue that I see is that beauty deterioration + potential of failure in training feels like artificial grind, and even with finer tuning, it just straight feels bad (not to mention that this really isn't how a "hole" works). The grind could be alleviated with "events" to justify the deterioration, but honestly the room deterioration rate should be enough for a difficulty lever (in the current simpler iteration of the game) with random events (maybe client gets violent/training failure) should be enough? I really don't understand the natural beauty deterioration happening THIS regularly lmao.