As the review mentioned, this is essentially a one floor / flat map. There is a lower area as shown in the pictures, which does add some variety to the gameplay. One minor complaint is the overabundance and placement of health - some areas have a 50-health between two 25's. Totally unnecessary.

It's a simple, unpretentious map. Worth a download and a few rounds.

Interestingly this map's arena file has the name as "Twilight Shelter".