Ah yes, medical diagnosing via internet. You don't know what you had, period. If you want to find out the name of the hotel and call them with your experience with the heater and becoming ill, go right on ahead. It shouldn't be that difficult to find out the name/place of the hotel. All you have to do is call someone who will know and sing its praises.
ETA: Thanks to the poster who reported that I forgot to lock it. Oops.