Happy yes - but
@SebastianBlue has a point - long balls into our defense caused us more trouble than we'd have liked and Basel might well have scored. Otter's challenge might well have been called for a penalty on another day or by a different ref. On the other end, we were ruthlessly clinical, and Basel's keeper could have at least done much better against Silva's goal; in other circumstances, we might well have gone into half time tied or, with very bad luck, even trailing.
In short, 3-0 at halftime was flattering - 1-0 or 2-1 might have been a better reflection of our overall play to that point.