How many nights can you stay at the Pokémon center? Do they kick you out after a certain period of time? Do they feed trainers? Can you have your Pokémon out within rooms? Do they have accommodations for larger Pokémon? Or Pokémon with health issues? Do they have beds designed for specific Pokémon?

All excellent questions!

To answer in order:

You can stay at a pokémon center up to a week. Because the free accommodations are for trainers, the clientele usually moves on after that period unless their pokémon are in need of more longterm care. If your pokémon are healthy, then yes, they will ask you to move on, but if you have a pokémon that isn’t yet healthy enough to continue on its journey with you, then you’re free to stay as long as you’d like. However, it’s also worth it to note that trainer culture is structured in a way that makes staying in one place a rather stigmatized concept. Most trainers don’t want to stay for longer than a week, which in turn means most Nurse Joys will sympathize with you if something prevents you from leaving. Many even give you the option of helping out around the center to earn your keep, as it were.

Additionally, you can only stay at a pokémon center if you’re a trainer. Anyone else, even researchers, are required to find other accommodations, even if their business in town is with the pokémon center.

Meals are complimentary to trainers (only) as well, but you only get two of them a day: breakfast and dinner. The cafeteria is open all day long for snacks and boxed lunches, of course, but beyond those the aforementioned two meals a day (or if you’re not a trainer), everything else requires you to pay.

Smaller pokémon—that is to say, pokémon that are no bigger than the average human—are allowed out in your room, but keep in mind the rooms are only as large as the average college dorm room. Most trainers prefer to keep their pokémon in their poké balls for this reason.

There are temporary outdoor accommodations for larger healthy pokémon such as courtyards, but because centers typically take up a finite amount of space and because of the high amount of trainers in the area, it’s highly recommended that you keep your pokémon in their poké balls unless you’re present to watch over them. Usually, you can let them out for feeding and exercise via training during the day, so it’s never really any trouble for a pokémon to stay in their devices for such a long period of time.

As for pokémon with immediate health problems (including larger pokémon), they usually stay in the clinic. The clinics take up most of a pokémon center’s grounds and interior space, and as such, there are plenty of beds for all pokémon, from the smallest to the largest. Pokémon may use these beds for as long as they need to heal.

For longer-term health issues such as pokémon diabetes, these pokémon usually stay with their trainers at all times. If the pokémon is on the larger side (such as a snorlax), then they’re typically kept in their poké balls until their trainers can use the courtyard or surrounding area for their daily care. If a pokémon has a condition that would require constant care, then these pokémon are likely not on trainer’s journeys anyway, and if they ever visit a pokémon center, it’s purely to use the clinic.

As for beds designed for specific pokémon, unfortunately, no. This is because having beds for each specific pokémon would take up far too much space, so instead, the beds are typically generic and capable of handling most pokémon that are human-sized or smaller. Larger pokémon are handled in larger observation rooms, on mats designed to handle heavy pokémon, if they aren’t simply treated in an outdoor space separate from the general courtyard.