heat, check what time(s) it is turned on – you might not have control of this. check the mosquito nets and window screens for holes and tears. are the sheets clean? pull back the covers to have a look for hairs and stains. small black blood stains on sheets and walls are an indication of bedbugs, which are not uncommon in some places.
is there hot water? if so, at what times is it water available? in some cases “hot” might mean “luke warm” or even “cold”. “24 hour hot water” might refer to the elapsed time between the hot water tap being turned on and hot water actually presenting itself. 