Leather sofas used to mean one of two things: a stiff, shiny thing in a parents' formal living room that nobody sat on, or a cracked relic from a frat house. That middle ground, a leather sofa that looks like it belongs somewhere you actually live, is a pretty recent development. The good ones now come in softer, matte finishes and colors beyond "boardroom brown," and that shift has made them a genuinely reasonable choice for an ordinary house instead of a prop.
Where leather gets tricky is in rooms that are already doing a lot of work stylistically. A heavily patterned rug, busy wallpaper, a room full of warm honey wood tones, and a leather sofa can start competing instead of settling in, especially in a glossy or deep red leather that wants to be the main event. It also struggles in a full sun room, since direct light fades and dries leather faster than almost any fabric. Where it sits well is in a room with some breathing space around it, plain walls, a simple rug, a mix of wood and metal rather than wood everywhere. It layers nicely with linen or wool throws and pillows, since the contrast of soft fabric against a firm leather surface is what keeps the whole room from feeling like one note.
If you've never owned one, start with a mid tone brown or a soft gray in a simple silhouette, nothing with a lot of tufting or stitching detail, since plainer leather ages better and hides the inevitable scuffs more gracefully than something busy. Avoid bonded or "faux leather blend" unless you've handled it in person, because that's the version that peels within a couple of years and can't be repaired, only replaced. Full grain or top grain genuine leather costs more up front but is the one to actually keep.
Leather doesn't wear the way fabric does. It doesn't pill, it doesn't hold onto spilled wine the way a light colored weave does, and a damp cloth handles most daily messes immediately rather than needing a cleaner. What it does instead is develop, softening and taking on a slight sheen where you sit most, which looks intentional rather than worn out if the leather was decent to start with. Pet claws and keys in back pockets are the real threat, not time. After a move, give it a few days to acclimate before you judge how it looks in the new room, since lighting changes leather's color more than you'd expect. Keep it out of direct sun and wipe it down with a dry or slightly damp cloth every week or two, nothing more complicated than that.