The indented area at the back for hooking onto a nail is not good enough.
There's nothing for a nail to safely latch onto and no slope upwards inside to help secure a nail. This fell off my fathers wall when a child touched it and broke. Its thin and a bit flimsy.
Unfortunately,  I bought a few of these as  presents as they were admired.
Mine fell on my head as I tried to top up the water level leaving a very sore head!
They also sound very loud as if someone was using the bathroom, I floated some plastic on top of the water reservoir which softened the water falling sounds, my sister put a twig inside her water outlet which also softened the sound.
Look great but quality is definitely lacking and would not buy again.