A small room still needs the resources required by the cat; the challenge is arranging them sensibly rather than removing important functions to save space. Vertical resting areas can help, but they do not replace appropriate litter, feeding, drinking, scratching and hiding opportunities.
Think about how each resource is approached and whether one item obstructs another. A large tower beside the only litter entrance, for example, may make the layout less practical. Choose furniture that serves useful functions without forcing everything into one crowded corner. Where possible, distribute resources across the wider home rather than treating one room as the entire available environment. If several cats share a small space, their ability to choose separate areas deserves particular attention. The most efficient arrangement is one they can use comfortably, not simply the one containing the fewest objects.
Make a function checklist before removing an item to save space. If a new tower replaces a freestanding scratcher, confirm that it actually provides an accessible scratching surface your cat uses, rather than merely including a short decorative post.
For product comparisons alongside this advice, see Feline Sovereign Spire and Modern Vine. The details below explain their sizes and uses.
Further reading: cats.org.uk; cats.org.uk; cats.org.uk.
Feline Sovereign Spire
Modern Vine
SkyRoute wall climbing set