As you've checked the Marriott T&Cs then I think you've answered your own question.
Design Hotels are independently owned and managed hotels that have joined a marketing organisation called "Design Hotels" and have additionally agreed to have their inventory sold through Marriott's sales channels to Bonvoy members. They are about as arms-length as you can get from Marriott corporate. They do not even use the same IT system as Marriott's own hotels and to my knowledge have to manually enter your stay details for the points and nights to credit after your stay into a portal so they won't have access to your Marriott profile.
Looking at the Hospes, it appears to be a Parador type property and offers a unique boutique experience in a historic building. It's also the only hotel bookable through Bonvoy within 60km. I would argue that the location and unique style would be the reason you stay there rather than whether they situate you away from the elevator.
To answer your question, though, start your expectations from no breakfast and no late checkout at Design Hotels and anything you get above that is a bonus. I'd suggest you phone the hotel if you really do expect more and it's a deal-breaker.