My experience with hotwire was great when I was in Canada, when I moved to Germany, the website is really a problem for your journey instead of being a facilitator or solution. First, Hotwire overrate the hotels, instead of being 3 stars, they rate it 4 stars. I booked a hotel that was described as "elegant hotel" and 4 stars, and when I got the hotel name, I found it was a piece of garbage, and worth not more than 2 stars. I called Hotwire and they said it was rated by Expedia and we follow their rate (their partner).
The second issue, I found the hotel way cheaper on booking and even the hotel website.
Ok, Hotwire was not bad when it comes to America and Canada, but it sucks in Europe