I feel like transhuman apartments are built around storage, both in terms of how morph-based features are built and in terms of how you can tell the quality of someone's living conditions by the space they have. Most of the modern features of buildings can be handled with very little space. In gravity, apartments likely tend to be a little larger (for a bed, table, etc), though analogues exist for microgravity (they can, however, be built on any surface. In microgravity, you'll probably see living spaces that optimize surface space, since that's where you have stuff like faucets, power outlets (if required; most places have wireless charging, but you might find a few holdouts or utility sockets for industrial-grade gear that eats a ton of juice), restraints for stuff, and the like. Nicer apartments have smart material partitions, which mimic rooms, while crappier ones may have little more than a pop-up privacy screen for the shower/toilet area. Microgravity apartments likely don't have multiple rooms by default except for some light partitions and perhaps a more permanently divided bathroom, to save the effort of having to build/tear down rooms in microgravity. In gravity, however, things look more traditional. I would imagine that most rooms are fairly tall where they can be; most EP locations with gravity have less than Earth, and it ensures optimal morph compatibility. Smart surfaces are common, but unlike in microgravity where they are used to form the room, they are used to form furniture like counters, seats, and so forth that can adapt to their users in real time. In many places, hook-ins to power, water, and other utilities can be routed through buildings, allowing users to access these through both fixed and smart routing points (basically, faucets everywhere). On occasion these may double as firefighting systems. The quality of these surfaces, including the shapes and textures they can mimic, depends on the complexity of nanotechnology available, and the amount the owner was willing to shill out for them. Storage in these high-tech apartments is automatic. Clothes can be cleaned, pressed, and stored by the apartment itself, and although a dedicated closet may exist they may also just be hidden behind a panel. Food and fabber stock can be stored out of sight and mind, though it may also be stored publicly (such as in a refrigerator) if space is less of a concern. Smart storage allows for optimal space usage without any clutter, and can keep individual stored objects apart from each other. Access to stored materials can be made public or kept private, likely with overrides possible for security forces. Display cases for valued possessions can be created on the fly, and fake showcases (for safely stowed or purely digital content) can be made as well. Images, video, and data can be projected and interacted with via gesture. AR and microdust can be used to create effective holograms, and the floor and ceiling likely have a couple feet of give, allowing for the creation of ornamental and functional shifts in design, such as a vaulted ceiling or room for a shallow pool of water. In many places, windows are likely replaced with smart display surfaces. This handles most light fixtures as well, as the people in an apartment can set up an emulated skylight or simply tell the displays to light up the room. These can be set to exotic patterns for those who enjoy them, and doubtless make parties more fun. People who like windows can set these up to both get views out of the apartment, and, in more strictly defined locations, into the apartment from the outside. AR allows for emulation of this feature in habitats where it is not possible, though lighting can limit optimal results. On the other hand, you have Jovian living and other low-tech solutions, like you might see in some scum barges. While their microgravity environments look pretty similar to others', you see much more simple living spaces akin to modern-day designs. They are usually pressed for space, and you may even see microgravity features, like sleep cocoons on walls, carry over into spaces where they are used because of their efficiency rather than a particular need for them. Rooms tend to be more clearly defined than they are in microgravity, where access to building materials permits. Access to utilities may be limited heavily, if the habitat lacks appropriate infrastructure, and would only be available in the form of permanent fixtures. Whereas smart material integrated buildings tend to have "lax" security (everything is documented relatively well, and the building can be ordered to seal itself off by an authorized user, never mind the fact that the materials are highly intrusion resistant), many of these structures have intrusion deterrents or countermeasures, such as visible/audible alarms, physical access restrictions (cages on windows, and bars or chains on doors), and external motion sensor lighting (where space allows, unlikely in tight urban environments). In addition, things like fire extinguishers and vacsuits would be placed inside the apartment (the latter only for habs that have a risk of hostile environment exposure [e.g. vacuum]). As in modern day dwellings, storage space is clearly defined, and a lot of appliances take up space, though many of them have been consolidated. Where smart materials are commonly used, laundry may not be a concern, which saves space either from individual apartments or from whole apartment complexes. The largest innovations from the present day come in the form of automation; lights automatically dim and brighten to user preferences (though they are still stuck in fixtures which may have a limited rotation/extension capability), vehicles and large gear can be stowed in racks and garages outside, and ALI may be used as pseudo-valets, and stocks of household goods can be replenished automatically.