It's clean and neat. Has what it needs but doesn't cram flashing insanity down your throat the way some sites do.
Design-wise, I would give it a solid grade A
I highly suggest you find yourself a grammar nazi and have them proofread all of your content before going live. If you want to do it right, take the time to find someone that natively speaks each language you intend to use for your site and have them read over the pages. Make sure these are people that have good grammar and know the rules for the written word. The design of your site isn't just the images and the colors; it's also the fonts and sizing and spacing and grammar and punctuation. Doing things correctly will separate you from other sites that simply copy/paste their stuff.
Just remember the simple rule that while attractive design gets views, properly formatted, written and displayed content that is regularly checked and updated is what keeps people coming back and spreading the link to their friends.