But I am hesitant on the price point. At ~$4,800 / year as with the sample proposal, it might be a tough sell (or "rent", in this case).
The other options are to hire a designer and buy the furniture. High upfront cost but you still own the furniture and can always re-sell it to recoup some costs. Yes, this is a hassle. But how much is the hassle worth?
I can also just do a long-term AirBnb rental that comes fully furnished, many already with great style. Then I don't have to worry about any of this.
If I had a lot more disposable money than I currently have, and I had to get a place for an extended period of time, I'd do this in a heartbeat. So perhaps I am not the target market.
I wish you luck, there is certainly a market out there for something like this.