I own three pairs of La Canadienne boots. I have formed a lasting attachment to the brand, due to its comfort and properties. Regarding the Felicia:

True to size, if you wish to wear them with thin socks only. You may want to go half a size up, if you wish to wear thick/multiple socks (which you will, in very cold weather), are between sizes, and/or have above average foot width (my feet are slightly wider then "medium" but not quite "wide"). The suede is a bit stretchy, so those with wider ankles will find the style forgivable: yes, you can zip the boot all the way up, despite the seemingly small circumference.  The suede is waterproof and repels snow quite well. The rubber sole is firm and grips well on slippery snow. Even thought the sole is thick, the shoe is definitely made for long distance walking. The boot looks quite slim on the foot, and I have even worn it with woolen dress pants. For a La Canadienne boot that is even more suitable for business attire please look up the Julietta. The boots wear well: this is my third season using the same pair.

Once again, I highly recommend the Felicia, mainly for its unbeatable comfort.