And it was a much-needed victory for the Welsh region after they had lost their previous three Guinness PRO12 matches.
"We can be reasonably satisfied, in terms of what we came here to do" Rees said.
"There was positive intent from both sides, I thought the attitude was good across the board, and there was some exciting rugby played there.
"We had the balance of the game for a large part of the first hour, around some set piece work, but also, I liked the momentum of the carrying game from people like Cracknell and Underhill, it really giving us some go forward. The backs were then able to complement that, so that balance was better than it's been.
"It was anxious stuff at the end. We've been brittle in defence on occasion and we need to get back to what I expect of an Ospreys team. We've been vulnerable at certain points, not just this week, across the season, so I'm pleased that we had to withstand that pressure at the end and seen an element of character come through in the group."
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