Each cat should have access to a hiding place it can use without being forced into contact with another cat. That does not mean every hideaway must carry a particular cat's name or remain permanently reserved. It means the home offers genuine alternatives when a cat wants privacy. A single enclosed den on a shared tower can become a bottleneck, especially if another cat sits outside its entrance.
Add a separate hideaway in a quiet location and look at the route to and from it. The opening should accommodate the cat comfortably, while the interior should allow normal settling and turning. Some cats favour covered beds; others prefer a box with a familiar blanket or a sheltered open bed. Let their behaviour guide the choice. Avoid pulling a resting cat out to encourage sharing, and keep children and other pets from disturbing these retreat spaces.
An enclosed tent and a condo on a tower offer different access patterns. Place the separate retreat where a cat can reach it without crossing the shared tower, rather than directly underneath the den that is already being guarded.
For product comparisons alongside this advice, see Koda Pod and Velvet Nest. The details below explain their sizes and uses.
Further reading: cats.org.uk; cats.org.uk; cats.org.uk.
Koda Pod
Velvet Nest
AeroMat Chill Pad