I decided to present you one of my recent works.
The next ending of my work looks like this. Many different moments were opened gradually, but in the end it turned out what happened. Yes, it’s far from ideal. But I completed the main task, and everything suited the customer. The project was completed in about 2 months +/- a week for various changes that were made. All renders were done with 3000 samples. The only difference is lighting and resolution.
Your client should be extremely pleased. All of these images are very believable representations of what it might actually look like to be in any of these rooms. (Or, in some cases, to very clearly depict what the rooms would look like.) Well done.