(This guest post is from Katie Little, who was my backpacking buddy for three weeks, and, as such, appears frequently on the blog. When she’s not busy being written about on An Opportune Moment, she’s working at an animal hospital, practicing her sign language, or trying to convince herself that teaching English in South Korea for a year isn’t a big, scary commitment.) I was a bit apprehensive when Emma said she wanted to go to a hamam as we were throwing around ideas for what we wanted to accomplish in Istanbul. (My list consisted of markets, tea, and lokum, all of which we experienced in abundance.) I had never…