Turkana is a very expansive region. Accommodation facilities are concentrated in Lodwar town (the region's commercial center) and Lokichogio, far to the north-west.
In Turkana there is absolute need for water in the bathrooms, but no need for hot water, as temperatures are generally high with nights averaging 25˚. Again, what is almost essential is a ceiling or portable fan. These will be your priorities when looking for rooms.
If there is no fan in the room, ensure there is a mosquito net. Mosquitos tend to be localised and seasonal and may not be a problem at all; but always be prepared for the worst scenario; carry aerosol insecticide and "Midgex" insect repellant with you.