I am a fan of this brand for a long time. However, usually doing 38, I chose (after several failures on other pairs bought by correspondence) take in 39 ... and I've done very well! They are beautiful, elegant, heel is fine but stable enough to walk normally (even taking public transportation). These shoes are between the shoe and the boot so going very well with jeans or dress pants (even short). Moreover, thanks to 2 zips (1 on each side), they fuck perfectly.
In conclusion, if you do not have the specially end up (like me), I recommend you take a size more in this model.