The difference from a plain Mastiff is the build: a heavy, stocky, rectangular dog with loose skin and a short coat, a few inches and many pounds under the English giant, but with the same appetite for floor space.
First Class, even at the lighter weight
The standard gives 26 to 31 inches for dogs and 24 to 29 for bitches, with an average mature weight of 150 pounds for dogs and 110 for bitches, and says heavier is usual and preferable if proportion holds. A stocky 150 pound dog wants the 6x8 ft run: about 48 square feet inside plus 72 outside. Two from one home share First Class, $72 plus $61.
Short coat, no fringe
The standard says the coat is short, dense and of uniform length, with straight hairs no longer than 1 inch and no fringe anywhere. That puts a Neapolitan in the Short column. On the bath chart effective January 1, 2024, the Over 100 pound row is $55 for Extra Short and $65 for Short. Please ask which fits and confirm the price.
Steady, watchful, protective
The standard calls the breed steady and loyal, not aggressive or apt to bite without reason, always watchful and not fond of strangers in his personal space. Staff use a leash and plan the walk around what you tell them. Leave your dog in the car at check-in; they bring him in. Walks are included, and the grass field is gentler on heavy joints than pavement.
Heat, weight and slick floors
The NOAA Vacaville station (1991-2020 normals) records about 100 days a year at 90 degrees or more. A giant dog is slow to cool, so the air-conditioned inside half is the place for the afternoon and outside time belongs to morning and evening. A Kuranda bed lifts a heavy dog, and blankets are in every run. Tell the staff about drooling, breathing or any trouble getting up.
Stay costs
A week in First Class is 7 x $72 = $504 on the 2026 rates. At 14 nights or more the rate is $65, so 14 nights is 14 x $65 = $910. Tell us your dog's weight at booking.