My girlfriend is more of an expert on these things and she agrees that it appears to be a really good humidifier.
I am finding it really does the job in the lower half of a 1200sq feet condo ( so it comfortable covers about 500SQ FEET - we place it in a corridor with the TOP ANGLE HOLES one facing to the bedroom and the other facing to the lounge.
I like that you can see the steam smoothly coming out the top like a chimney - this shows it is doing something.
I am more familiar with the buttons on it now .. although I have NOT used the HEAT part of it, I do use the POWER on/off (gentle tap and it is on, not a tricky or horrible touch button that never responds like on a lot of junk I have seen in the USA ) ...... I then tap the humidity percentage and tend to use 60% and 65% a lot, as NEW ENGLAND in this place I live starts around 28% and 33% I am seeing when I first power on this unit .... then i hit the TIMER to a number between 4 and 6 hours on the nights I use this device.
So I can safely say, it does everything I want ... if I use it 3 times, for about 5 hours on average, the tank is empty, I remove the thin plastic top, there is a generously sized compartment on the left, I fill my Kettle (as it is a nice electric kettle so I can use it like a JUG ) :) ... 2,5 times and that fills the tank :) SO this is a nice "easy to use" unit and "user friendly design" both with the technical side of it and the "put more water in" it side :)
I have USED THIS for ONE MONTH only so far, if it is still working in 11 months / Christmas 2021 ... we will be buying another when they are on sale again ..... we do tend to put sensible "budgets" on electronics.