hi Kimberly.
to be honest, i am not big on airport hotels. i always prefer to stay in the city since airport hotels are always in the middle of nowhere with nothing to do. i do however understand your situation and in your shoes i would also stay at one.
my wife, baby and i were put up for a night at this hotel -->
www.auditoriumhotelmadrid.com after our flight was canceled and postponed till the next morning when we were on the runway.
i must say it is a very nice hotel. it is apparently the largest hotel in europe and it is HUGE. the service was good and rooms large, clean and nice.
note: they did not seem to have wifi but they had cabled internet (an rj45 cables) in the room.
caveat: we may have gotten better treatment than the average guest as delta was kissing our asses at the time due to the mechanical failure that prompted them to set the flight back a day.
- rent or buy a cell phone from me for your stay in spain, more info at 
- already have a cell phone, get a spanish SIM card for it at 
