efficient speakers for Shanling MC-30??

I'm picking up a Shanling MC-30 for my bedroom system. It has only 3 w/ch output power. I'd like to try this without a power amp so I'm looking for a decent pair of speakers for it. Is there anything beyond the efficiency spec I should be looking at?

Since this is my secondary, bedroom system I am quite happy with modest volumes and the goal is minimum # of components, to avoid clutter. Clean, accurate sound is most important. Looking for a modest size bookshelf speaker. I'll try it without power amp first. If need be, I can add a power amp down the road.

Any thoughts on this one?

Thx,
Rob