I was in DF for a quick visit and just needed a place to stay and rest, no AC but really not needed, there is a small fan which works great and at night it feels like there is AC, no windows in case you are cloustrophobic but thats not my case.
Hot water works great as well as the wifi, my first night i was told the elevator was broken and it was going to get fix tge next day, 4th day and last day and the elevator never got fix.