Bright indirect sunlight is best, but she can handle a bit of shade. Just keep her out of direct, harsh sunlight.
Let the top few centimetres of soil dry out between waterings. She will need a lot less frequent waterings in the cooler months
As she is a cactus normal household humidity is fine. She doesn’t need any misting and it would be best to keep her out of the bathroom.
She’s used to being in a jungle so keep her warm. Your regular household temperature will be just fine, just don’t let it drop below 10 or so degrees.
In the spring and summer months you can feed your Jungle Cactus every 2 months.
I’ll be honest here after some pretty extensive research I can’t find out if this plant is toxic or not so best to keep out of reach just in case.