My impression from the ad is they manage airbnbs elsewhere and store the loaner bikes in their own garage.
A conservative estimate is the work they demand is 100hrs a month, which they claim to pay with a $950 rent discount. That is below the minimum wage and therefore illegal. While you can informally give one roommate a little rent break for doing more than half of the chores, this ad involves taking direct orders, regular fixed hours, and says normal outside employment is unacceptable. In other words, it is a job and requires the Law Student to pay payroll taxes and unemployment insurance, even if the “pay” is in-kind. So what the ad proposes is illegal in many different ways.
While there might be some bed/bath rentals in PB for $1250/mo, this one involes sharing a 2 bedroom with a couple and a pit bull, but none of your pets allowed, and no parking. $1250 would be reasonable for a nice place like this shared with one person, or for two couples, but I have never heard of a couple splitting rent evenly in a 2 bedroom with a single person.
I do think they will get responses, but they will be from people with mental and drug problems.