Earlier Today I just built a house/living space inside a giant hill with redstone/raw gold for walls
and sea lantern/some kind of blue material for the ground, all in a pattern. With some beds cartographer table, paintings, books, enchantment table, barrel and chest.
Basically there's to hallways with double doors in each one (2 cubes high 4 cubes wide) you go inside and the hallways meet at the back and you can go across
I know the colors sound odd but when you walk in it looks really cool.
(I am definitely a newbie minecrafter lol)