Nice indoor.
I do a bit of indoor gardening, too. I lived in HI for 8 yrs and my house kinda looks like I'm still there. I have 2 ficus, a rubber tree, 3 orchids, a jade plant, pony tail palm, Most of my plants are in 5 gal pots now. The one ficus has a trunk the diameter of my ankle.Various philodendron [a swiss cheese in a 7gal-it's name is Sponge] and pothos and several that are recovering from a move to a veritable cave. I've gotta cut some windows in!!! I like your begonias. I was given one for our wedding and it took me a bit to figure out what light it likes. Things are a little different here. Too much sun at times. I put most of the plants out during the summer, but I do it carefully. Lattice is the order of the day.
regards,
Azoned