As a courtesy to those of its occupants who prefer rooms, it does have a modality in which it presents itself that way: a room, with as many chairs as it needs, and a bulletin board, and a vending machine with candy and chips and concepts sold for nothing to anyone with the right prerequisites.
On the bulletin board, if one chooses to perceive it as a bulletin board (and not as a wiki or a flower or an ineffable cloud of information or an eternally malleable clay tablet) people whose only common trait is that they get to come here leave each other notes.
Notes about physics, about magic, about grand sweeps of narrative. Notes from people desperate to fix a never-ending heap of problems, smug about the condition of their homes, curious about the wider omniverse. Signed with names and sigils and "you ought to know who I am". Terse or verbose or nested with as much meaning as interests the reader.
In the vending machine, if one chooses to perceive it as a vending machine (and not a basket or a fruiting tree or a file repository or a crystalline fractal) are many things... and they have notes connecting them to their reviews on the bulletin board.
This one, for instance. She (it's usually, but not invariably, a she) has fairly glowing reviews from most of her previous purchasers. Here is what you need to install her; here are some things that are recommended for best results but optional especially if you just want to use her as a beacon for her other instances; here are some things she comes with as add-ons you can take or leave; here is what she is good for. The reviewers who don't like her are annoyed that theirs was too good at it, if you read between the lines. Well, that and the fact that if your universe is unpleasant enough sometimes these critters figure out how to flip you off and leave before they figure out how to solve all your problems. (There is a tangent thread about alternative solutions to similar problems which come bundled with stronger irrational attachment to their homes, but they have more stringent installation requirements.)
They come in these colors and styles; you will need to compensate for the following standard-issue drawbacks in some way if you require services of them that intersect with those areas of disability; they are only rated for upbringings of the following severity and are less likely to hate you if you stay thoroughly under that limit and less likely to fail at important goals if they are given opportunity to self-educate; if you have a way to generate them as instant adults they can begin work immediately but on the standard trajectory age six is the absolute earliest and teens is customary...
There is a chart (if one chooses to perceive it as a chart) of template interactions that have been tried before, but a lot of the more interesting accessory and companion templates are out-of-network for some visitors. What a pity.
"If we knew we would probably be closer to stopping it happening. Current best hypothesis is that some combination of the inherent nature of Hell and the negative emotions of its inhabitants coalesces into something aliveish and usually--not always, but usually--malignant."
"The universe has always existed, as far as we can tell; even God isn't older than it, but she's older than all the things in the universe. She...did some things I can't really explain very well until you know more physics than you currently do, to make there be stars and planets and stuff. But to make the angels, and the humans, she had to give up a lot of power over Earth. She can still do whatever she wants with Heaven, and it's a lot nicer there, but everyone who isn't an angel or a demon starts out on Earth. Or Fairyland, which is its own can of worms."
"Angels and humans are people, which are way more complicated than anything else. It didn't take as much to make angels as humans, because when a new angel comes into existence God makes it directly. In order to create a chain of self-perpetuating soul production, God had to invest a lot of divinity into the species that eventually evolved into humans. Fairyland is a sort of alternate Earth, but not quite. It's...if Heaven and Hell are ninety degrees away from earth in opposite directions, Fairyland is ten degrees away in a third direction. Does that make any sense, or do I need to come up with a better way of explaining it?"
"Fairyland looks like Earth, but with different plants and animals, mostly, if that was what you were asking; I was trying to explain the metaphysical nature of it. And it has fairies, of course, which are like humans only different. They don't die of old age, they reproduce the same way as humans but slower, and they have some magic that humans don't."
"Does that mean fairies don't go to heaven, or that they have to wait to die some other way? Do humans have any magic? Can I learn magic while I'm waiting for my divine powers?"
"Humans don't have inherent magic but there is magic that anyone can learn to use. I know some of the theory but have never practiced it; there isn't much call in Heaven and I reiterate that I haven't spent as much time on Earth as I would like. I can teach you some but I think it would probably be best to find an actual practitioner to tutor you. Fairies can die, and if they do they can go to Heaven same as anyone else."
"I want to learn magic if I'm not going to get a lot of divine powers very fast. Especially if my divine powers are going to be silly like the wine thing."
"The magic's pretty finicky and takes a while to learn anything practical, but yeah, I hear ya. Oh, hey, speaking of, one of the other things besides teleporting that I can do occasionally but shouldn't do often is invisibility. I cannot believe it didn't occur to me to ask this until now, but do you want me to turn us both invisible for a bit so I can take you flying inconspicuously?"
After a few hours, she regretfully murmurs, "I need to land soon so I don't overextend myself on the invisibility."
"Okay," says Mehitabel understandingly. "You can find me a magic teacher instead, that's okay."
"Yes. Although that will take a little while, and I do know some theory, so it'll be just me to start with." She lands, and as soon as they're inside she sheds the invisibility.
"Are there anything besides humans and fairies and demons and angels? Any people anything, I mean."
"There's lots of debatably-human stuff, like vampires and werewolves, that definitely used to be human whether or not you count them as currently human. And some things that are the descendants of humans who decided to magic themselves into another form and go commune with nature, like Yeti or swampdwellers. Actually fairies are the descendants of humans who did magic to themselves too, but they like to pretend they're not. I wouldn't advise doing that, though, even if you were just a bogstandard human; the survival rates are discouraging. If you were just an ordinary human and decided it particularly mattered to go on living on Earth instead of Heaven I'd recommend vampirism, personally; its bad reputation isn't totally undeserved but it doesn't actually do anything to your brain, it just gives a certain class of person an excuse to live down to the legend."
"If something does happen to me and I go to Heaven before I'm done doing everything can I come back?"
"What might stop me? Why don't people come back all the time, when people who are still alive miss them?"