Hi,
My limonella is planted in a pot and it's always been growing indoors. I water it on average once a week, the soil mix is a mix for citrus trees from Compo (I've repotted the plant this year). When it comes to the amount of sunlight, it's small, but I use artificial grow light.
It also used to have some mushrooms in the pot, but as far as I'm concerned they aren't harmful to plants.