Attached to the airport terminal, so no need to go outside to get to it.
Whilst not the cheapest place going, my room was fine for my needs and the free breakfast that started at 4am was pretty good - too many airport hotels don't start until 6:30am.
Choice of gluten free etc. products for those who require these.
A lot of rooms have no windows, not that you really need one if it's dark outside anyway, you have an early flight, and plan on maximising sleep.
I booked a windowless room, but ended up with one of the end rooms with a window anyway.