Let’s talk about Jessica’s apartment(s) in At The Seams vs. her apartment(s) in As They Fall because this is actually super indicative of her different frames of mind, etc. (and I don’t think I’ve dealt with this in headcanon yet so. There).
In her At The Seams verse, any apartment Jessica has will be two bedroom, one bath. One bedroom will be hers, and the other will be to maintain...a lot of junk that she keeps for sentimental reasons. The second bedroom is also where she keeps Roger and Companion Bunny’s cage - this is indicative of everything in that room being a carryover from her way of life with Roger.
That said, I’ve mentioned in previous headcanon that she lets Roger and Companion Bunny roam freely about the apartment; more often than not, the only time they are locked up in the cage is 1) when they are sleeping, or 2) when Jessica has someone else over with her. She is deeply afraid that another person won’t be as conscious of where Roger is when he is roaming about the apartment and will accidentally step on him, so for his protection, she locks them both up together.
On another note, the apartment(s) Jessica has in her At The Seams verse will be mostly threadbare. She has a tendency to move around fairly frequently at this period in time, so she doesn’t want to have a lot to carry with her. Most of the time, she prefers to rent out apartments that are already furnished - one bed (in her room), a couch, and bookshelves. She fills the shelves with her own books for research purposes (primarily mythology - legends, etc.) and sets scrapbooks (ones Roger created) and pictures on top of them, along with hanging framed pictures (primarily of her and Roger, as well as one with Roger and Charlotte his owner). Outside of that - and, of course, pots, pans, and the like in the kitchen - her apartment is empty. She has no television, no computer, nothing that requires electrical cords that could be potentially exposed because, with Roger and Companion Bunny freely roaming about the apartment, they could easily start chewing on the wires and get themselves electrocuted. She may not care if Companion Bunny befalls this fate, but it is extremely important that it doesn’t happen to Roger.
As far as the apartment itself, it’s not of any specific sort or kind - she looks for cheap and close to a bar and that’s about it. Sometimes (a lot of the time) it has wood paneling. It’ll be an apartment that no one else really wants (for one reason or another) despite the size.
In her As They Fall verse, however, there are some changes - although this is highly dependent on her frame of mind.
One thing stays the same: her apartments are still two bedroom, one bath. In most cases, the second bedroom is still a junk room - it’s where she keeps all of her memories from anything earlier in her life: everything connected to Roger, up to and including the cage he and Companion Bunny once shared. On the odd occasion (specifically on a Good End Jess route or the potential for one - specifically a route where Jess cares enough to actually work at herself instead of succumbing entirely to her depression), the second bedroom will be cleared out and have a second bed - she will have cut down on the things she keeps, such that the scrapbooks and miscellaneous other mementos will be kept in a locked drawer in her room (as opposed to having an entire locked room for everything).
Her apartment tends to be much more modern and high scale. I have previously assumed that she lives in a high rise, where the entire outer wall of the living room is nothing but windows through which she can see the rest of the city. Her bedroom (both of them, really) are on a second floor, which is separate from the bottom floor by a hovering staircase (and probably a glass banister system - kind of like so but not necessarily connected to a wall...I don’t think). Assume a lot of glass. Lots of glass features. Such modern. Very wow.
These apartments typically have a lot more in them in the form of decoration, but there’s little personal value to it (especially at the beginning of the verse). It’s there because it looks nice from a purely aesthetic perspective - it fits with the idea of the apartment but not necessarily with Jessica herself. Everything is neat and orderly and looks like it should be in a magazine somewhere. It does not feel lived in...primarily because, really, it isn’t. It’s simply a place for her to exist. She has a tv, but she doesn’t watch it, and she has a computer (or a laptop), but she doesn’t use that either.