I am 5'3" and I am obsessed with my Lowe Alpine Edge II 18L bag. The one I have is over 10 years old so it looks way dorkier than the current models. I am not into those boxier style backpacks - they feel too bulky for someone of my frame.
I have had my Lowe for years and it has transitioned so beautifully for every part of my life.
It has served as a weekender bag, it was my "I commute to work with my laptop by cycling to the train station, then walking across to the other side of the city centre, and reverse it on the way home" bag, and it has served as a fantastic diaper bag for both kids. As the kids are now older, t's about to transition over to like a family day bag since I just bought a hydration bladder for it!
The bag has a big pocket at the back where the bladder will live - this pocket was also where I stored my laptop when it was my work commute bag. It has a decently large top pocket, a slim and long front pocket, two water bottle pockets one on each side, straps that can go across your hips to spread the load, and some other straps and clips that just make sense.