Hey there!
Just had a listen to this, and I would definitely say I enjoyed it. Love the fact this is a faithful re-imagining of the original, whilst still putting a bit of your own twist onto it (like the swirly verbs echoing the violin/strings, heavy industrial/dark orchestral drums towards the end starting ~3:15, and the plucky acoustic guitar @ 2:00). The harp and piano combination is beautiful, as well. As a 1:1 cover, it does its job. If someone showed me this, and I did not know the original Ezio's Family track, I'd take this as basically either the original or an adaptation of it directly from / endorsed by Ubisoft. So from a rendition-standpoint, it's very lovely.
I do ask, however, if you have more story to tell behind this or more ideas for it? Do you plan on submitting this to OCR? :) If so, you'd have to do a lot more to this to make it more your own personal take on the source, even if it's still a very conservative take more faithful to the source. If not, I'm curious as to how you ran into this source, and what compelled you to do a cover of it? :D