These little things are pretty tolerant and will be happy wherever you put them. I would be weary of full shade – but full sun to partial shade they’ll be fine.
Let the soil dry out before you water. You can bottom water these fellas too. Pop them in a sink of bowl of water and let them suck the water up through the holes in their pot.
You don’t need to worry about any extra humidity for your hoya.
You normal household temperature will do just fine, just don’t let him freeze.
You don’t need to worry about feeding these little guys. If you wanted to you could feed them once or twice a year with very weak fertiliser.
Hoya are not considered toxic but they do have a milky, latex sap so it might be wise to keep your little creatures away from this plant.