The angle of the photo is too extreme. It makes me want to tilt my head to see the image.

I don't agree - I like the POV. I think the angle of the table makes a nice leading line to the musician in the BG. If we turned it around to the 'normal' view - it's just an empty place setting.

Either way it needs a high res version.

It tilts down to the left. You should use the frontmost vertical of the corner of the building, just left of the door, to set your perpendicular and straighten this up.

I'd also crop the left hand side in a bit more, the trash can and part of a tree don't add anything to the image.You can't totally get rid of the trash can, but by getting rid of the tree, it will be less dominant.

Good focus overall, though.

The tree & trash can are part of the environment, and the street is on a down slope, hence the reason it's not straight. If you'll notice, the left edge of the building is parallel to the edge of the photo.

On theme, but not a very interesting photo IMO

I want to meet the old man. Sometimes these little places are the BEST!

The railing tilts the image down to the right, which detracts from the boy.

Nice try, but It's more a picture of a boy than a photo of a restaurant.

What kind of food do "ethno" restaurants serve? Or, more precisely, what kind of "ethno" restaurant is this one???

It is national food...this is Serbian restaurant. For more info about food : http://en.wikipedia.org/wiki/Serbian_cuisine