I wanted to like this, I wanted to get butterflies and feel excited for the romance but this is sadly a miss for me. Not helped by the depiction of her flatmate who I really could not warm to - a nasty, bossy, self-absorbed “cool-person” vaguely named after a brand of custard. 
I get that there’s some excitement about disability rep or body positive rep but it’s mostly skin-deep here. Nice, but not the focus - which is supposedly the romance… but it’s so sparse that it’s much more a Christmas vibe/trope-filled entertainment with the romance as an afterthought. If that’s what you want - that’s what this is and you’ll have a good time. 
Some scenes are wickedly long - (baking a gingerbread house) and Haf feels passive in the prose and forceful in her dialogue, so she jars as a main witness to the action. 
It’s nice to see some bisexual rep, but be aware the author uses the word “queer” as a neutral descriptor - if this word is a trigger for you personally then be aware. 
I was hoping for more, but I did enjoy parts of this story and the Christmasy theme.