Why do you want a House?

[Jojoya]

I'd like windows in my apartment. Looks so drab.

Imitation Long Window, Imitation Square Window, Imitation Shuttered Window, Small Imitation Window and Fool's Thresholds are all option for adding windows different from the default ones.

If you mean a real window that lets you look outside of your housing into the ward, those don't exist. The closest you can get is combining one of the new Phasmascapes with a window partition (I don't recommend this in a small house or apartment, the Phasmascapes are very bulky and have strange collision).

Can you resize furniture? My paintings are too damn big. And can you buy glam dressers?

No resizing (big disappointment for those who have played other MMOs with housing that have it).
No default vertical axis for item placement though it can be achieved through floating glitches with some limitations.
No glamour dresser for housing, though you can get the Armoire.

My gil making ability is trash since I don't craft or gather.

Don't need to craft or gather to make gil.

Treasure maps are a good way. There's a lot of raw gil coming out of map parties, not to mention all the item drops you can sell on the MB.

Keep sending your retainers on ventures. Quick ventures yield all sorts of things that can be converted to gil either through direct MB sales or turning in at your GC to buy materials you can sell to crafters. If you keep an eye on your local marketboard, you can catch spikes on prices on things that are obtained through hunting ventures as well.