Don't be put off by the fact that Expedia have rated this as a two-star hotel. For basic requirements, the Erbil a decent hotel. My room came with all the same mod-cons that some of the three and even four star hotels I've stayed at came with. There was a double bed, a private bathroom, a television (jn Turkish only, mind), and continental breakfast all included in the price.
The location couldn't be much better either. Only five minutes away from the mosques in Sultanahmet and the ferry terminal in Eminönü as well as Sirkeci Station. For what I expected, I can't think of any major drawbacks to this hotel. The variety of the breakfast was very limited, an extra plug socket in my room would have been useful, and Sirkeci isn't a particularly nice part of Istanbul at night, but that's about it really.