Hi. It is a bit tall. As Vectis says, adding some more substrate will help reduce the angle of the ladder, and also give your hammy something to dig in and cushion falls.
Having said that the height of the cage does have a few fall risks. Long tube runs aren't that popular on here either - a dwarf hammy may have problems with the vertical runs too.
I would suggest adding another shelf so they overlap and there isn't a big drop from the roof, plus removing the tubes and using a couple of them as floor toys or round the inside of the bars on the level/horizontal - if that's possible.
I think most people will also say though that the cage is a bit small - in terms of floor area, and you'd do better with a cage that has a bigger floor area and less height. Unfortunately pet shops do sell these cages that look fun and aren't always suitable.
The wheels are also often too small - even for a dwarf hamster. The wheel needs to be at least 6" diameter - and have a solid back really - holes in the back could lead to injuries.
Are you in the Uk. US or elsewhere? Some people have had success taking a cage back for a refund and getting something else.
Something like one of these is a good cage for a dwarf hammy
https://www.amazon.co.uk/Little-Frie...gateway&sr=8-1
https://www.portonaquapet.co.uk/shop...a-Multy-M36261
Or the Hamster Heaven with the tubes and penthouse removed
https://www.zooplus.co.uk/shop/small...r_cages/197362