here's a link to the high level accomodation
"Try building apartment blocks for 600 people, cost would be enormous..."
each person has a single appartment with ensuite and cooking facilities
you forgot to mention the bowling alley, squash and tennis facilities, cinema, free massages and booze etc etc
http://www.abc.net.au/news/2013-07-21/immigration-releases-photos-of-nauru-damage/4833274
