A cat does not experience a flat the way a floor plan measures it. Square footage matters far less than how many routes she can travel, how many levels she can occupy, and whether she can eat, scratch, rest, hide, and watch the world without every activity colliding in one corner. A small home arranged with feline geography in mind can feel generous to an indoor cat, while a larger flat with bare floors and one crowded corner can feel strangely small.
Build upward before you buy anything for the floor
The fastest space in a small flat is vertical. A tall, stable scratching and climbing post, wall shelves arranged as steps, the cleared top of a bookcase, and a perch at a window together create a second storey your cat can own without taking a single extra floor tile. Connect them into a loop where possible, so she can go up one side, cross at height, and come down another way instead of reaching a dead end she must reverse off, especially if another pet or a visiting dog is below.
Check stability by pushing each shelf and post firmly yourself, because a cat launches off furniture with real force and one wobble will teach her to distrust the whole route.
Zone the floor so resources never compete
Divide the flat into quiet territories by function. The litter tray belongs in the calmest, most private corner you have, as far from food and water as the flat allows, because cats strongly prefer not to toilet beside where they eat. Food and water do better in a low-traffic spot she can reach without crossing the litter area or passing the front door at its busiest moments.
Scratching belongs beside sleep and beside temptation. A post near her bed catches the first stretch-and-scratch of waking, and a second scratcher near the sofa arm or rug edge she favors gives her a legal alternative in the exact place the urge strikes. Resting spots should be plural and different in character: one enclosed hideaway for retreat, one open bed near you for company, and one high lookout, so she can choose her social distance through the day.
Make routes, rotation, and play stretch the walls
Keep a clear floor route around the flat's edges so she can patrol a full circuit without squeezing behind furniture or being cornered in a hallway; cats read a patrol route as territory in a way that genuinely enlarges a home in her mind.
Rotate toys, boxes, and puzzle feeders every few days, storing most of them away so what comes out feels new. Ten minutes of committed wand play that sends her racing the full length of the flat, up her shelves, and down again uses every zone you built and ends with a small meal to complete the hunt, catch, eat, and sleep rhythm indoor cats thrive on.
Adjust for the cat in front of you
A shy cat needs the hiding places and covered routes doubled, with resources placed so she never has to cross open floor under watch. A bold, athletic cat needs the climbing loop extended and play increased before she invents routes across curtain rails and kitchen counters. A senior cat needs the same geography at lower altitude, with steps replacing jumps and every resource on one level. Contact a veterinarian if a settled cat suddenly abandons her routes, hides in one zone, or stops using the litter area, since in a small flat those changes are easy to spot and can be an early sign she is unwell. A shared household keeps that territory steady when KinsLe Family Sharing holds the flat's zones, cleaning jobs, and routine notes in her profile for everyone.