This is a decorated under water house that I made in 1 - 2 hours because I felt like making something underwater. I have no idea if the link works, gets you inside the house, etc.
I might upload more creations.
Sorry if it's boring.

Oh yeah, the save is called 'New World--" even after I changed it in Minecraft to say "underwater house". So I don't know why it didn't update in the files.

The house contains a sleeping area/glass dome-ish type section. Then down the stairs has a main dining area with furnaces, chests actually filled with necessities, with paintings & tables. Through the door and down more stairs is an underground, brewing area that has a nether wart farm and an enchantment table & book shelves.