Where can I find chests in Woodland Mansions, and what can I find in them?

Here is a list of where can you find chests (with loot), and what you can find in them. I included links to screenshots:

• Sapling room. A normally accessible room with a bunch of dark oak saplings stacked in rows on the walls, and with a chest inside. And the chest contains... (drumroll) 25-30 dark oak saplings!

• Tree chopping room. A room sealed off from the hallway with a wall, leaving a empty indent in the hall. Contains a chest with an iron axe with efficiency 1.

• Wood archway room. A normally accessible room with a loot chest inside.

• Curved stairway room. A room with a staircase leading from a hallway to a dead end, where is a loot chest.

• Bedroom with loft. An interesting two-tiered bedroom, containing a sort of closet made of birch wood. A ladder near the entrance leads above to a loft with a loot chest.

• Arena. A room with an arena/stage surrounded with dark oak fences in the center. A ladder leads up to an overhead loft with a loot chest.

• Gray banner room. An altar-like room with a cobblestone construction in the middle. Behind the construction is a loot chest.

• X room, Clean chest room, Fake End portal room. Secret rooms with no entrances and a loot chest.

• Roof-chest room. An empty, secret room with a small attic-like space above it containing two loot chests.

All the loot chests have the same item generation rules - each chest contains 3 groups of 1–3, 1–4, and 3 item stacks. These items can spawn inside, ordered by frequency:

• Rotten flesh, sting, bone, gunpowder (3-4 per chest, chance of 58% to get them from a single chest)

• Wheat, bread (0.5 - 1 per chest, chance 35%)

• Name tag (0.3 items per chest, chance 29%)

• Coal, redstone (0.75 per chest, chance 27%)

• Music disk 13, Cat, Golden apple, Diamond hoe (0.25 per chest, chance 22%)

• Beetroot, pumpkin, melon seeds (0.6 per chest, chance 19%)

• Iron ingot (0.5 per chest, chance 19%)

• Bucket (0.2 per chest, chance 19%)

• Enchanted book, Chainmail chestplate (0.15 per chest, chance 15%)

• Gold ingot (0.25 per chest, chance 10%)

• Diamond chestplate (0.08 per chest, chance 8%)

• Enchanted golden apple (0.03 per chest, chance 3%)

The items where the number of items per chest times 100 equals the chance to obtain, will spawn in a maximum of one item per chest. In average, you will find 5 - 10 chests per Woodland Masnion.

For more informaion about rooms in woodland mansions, check out these links: A list of all rooms, or the Minecraft wiki article about Mansions.