I need a hotel room for one night on Aug 13 in central Rome. I want to spend less than $120, but don't want to be in a seedy spot (I'll have my wife and two babies with me.) Is priceline or hotwire preferable for finding something in this location? Ideally, I want to be within walking distance of the tourist attractions, but I could be flexible. Also, I checked out hotwire's listings and the prices shown are in dollars. Would I pay that now, when I make the reservation, or do I just hold the room and pay when I check in? How does hotwire account for constant fluctuation in the currency exc