Dealbreaker?

We live in a 3-bedroom house in a suburban area in Las Vegas, just 15 minutes from the Vegas Strip. We're clean, the neighborhood is safe, and we're happy to provide a fully stocked fridge, snacks, and access to our streaming services during our sitters' stay.

We're thinking of adding a German Shepherd to our family; we already have a 7-year old Keeshond and a 1-year old Ragdoll cat. Both are very well-behaved and low-maintenance (we're big on animal training), but we expect the German Shepherd to need at least a walk in the early morning and one in the evening. Extra exercise and stimulation is always appreciated but not strictly necessary.

How interested would you be in staying at a free accommodation in Las Vegas in exchange for taking care of three whole animals? Would the extra big dog be a dealbreaker to you?