Groupon Istanbul
The page is in Turkish and I don't understand the language. These are summary of the deal as I understand it with the help from Google Translate:
TL 159 (just over US$100)
Crowne Plaza Istanbul
Double Deluxe rooms
Breakfast in the Room Refreshments and unlimited pool, Turkish bath, Sauna
Valid until August 29
Disclaimer: I don't guarantee the above interpretation, terms and figures.