A 5" screen and 16 GB internal, it doesn't seem that bad. Depending on the price, it might not be a bad device as a backup.
From the blog: Huawei P8 lite specs | Android Central
From the blog: Huawei P8 lite specs | Android Central
Does the P8 can move apps to SD Card?? Or is blocked?
That option is blocked, so 16GB is the device space you have to work with unless you root.