Looks like an exo terra arboreal terrarium, would be great for little arborial geckos.
Although arborial geckos will spend most of their time up in the branches they will also move about on the ground at night, often moving between trees and when feeding. Enclosures should really allow for both arboreal and terrestrial habitats.
i always reccomend geckos be housed in pairs or males with multiples females (no more than 3-4). A pair of medium or large species can be kept in an enclosure with a floor area of 20cm x 20cm and a height of 30 cm. Excessively large enclosures will definitely make it more difficult for them to catch their meals.
Upright branches of a width similar to the tail width should be provided and should be placed horizontally, vertically and at oblique angles. Best to use dry branches permanently fixed within the enclosure. Although they will spend a great deal of time resting in the branches they will need some dark hide areas.
Any loose clean substrate is suitable, i use sand or sand/coca fiber mix.
cheers-
Darren