Despite euro's intra-day retreat after failing to penetrate resistance at 1.5489, as long as 1.5450/60 holds, mild upside bias remains for last week's rise from 1.5285 to resume and above 1.5486/89 would bring stronger correction of recent decline to 1.5520/30.  
On the downside, below 1.5313 would abort this bullish scenario and risk a re-test of last Thursday's low at 1.5285.