These shoes definitely run smaller, but the different results in the reviews are probably due to everyone's feet being different.  Here's you can try to get the right size: get a ruler, stand on it (standing, not sitting) and then compare the size of your foot in inches to the provided sizing chart.  I wear a US 8.5 in most shoes and I wear a 39 in most Euro shoes.  My feet are wide and I sometimes size up to a 9 when I need more room in a shoe style. My right foot, when measured is 10in. and my left foot is slightly larger.  The sizing chart says the 9/39 size is for feet that are 10" and the 10/40 size is for feet that are 10.125".  I ordered a 40 in this MIA shoe fits me comfortably.  They are definitely more rough hewn / unpolished so the wood has a lot of variations in color.