Entrance hints go "[Entrance on overworld] leads to [interior]".
Inconvenient item locations are a little more custom but amount to "[Location] has [item name]". The item name is literal and will specify which dungeon the dungeon specific items hail from (small key/big key/map/compass).
The valuable items are of the format "[item name] can be found [location]". The item name is again literal, and the location text is taken from Ganon's silver arrow hints. Note that the way it works is that every unique valuable item that exists is considered independently, and you won't get multiple hints for the EXACT same item (so you can only get one hint for Progressive Sword no matter how many swords exist in the seed, but if swords are not progressive, you could get hints for both Master Sword and Tempered Sword). More copies of an item existing does not increase the probability of getting a hint for that particular item (you are equally likely to get a hint for a Progressive Sword as for the Hammer). Unlike the IR, item names are never obfuscated by "something unique", and there is no special bias for hints for GT Big Key or Pegasus Boots.
Hint Locations:
Eastern Palace room before Big Chest
Desert Palace bonk torch room
Tower of Hera entrance room
Tower of Hera Big Chest room
Castle Tower after dark rooms
Palace of Darkness before Bow section
Swamp Palace entryway
Thieves' Town upstairs
Ice Palace entrance
Ice Palace after first drop
Ice Palace tall ice floor room
Misery Mire cutscene room
Turtle Rock entrance
Spectacle Rock cave
Spiky Hint cave
PoD Bdlg NPC
Near PoD Storyteller (bug near bomb wall)
Dark Sanctuary Storyteller (long room with tables)
Near Mire Storyteller (feather duster in winding cave)
SE DW Storyteller (owl in winding cave)
Inconvenient entrance list:
Skull Woods Final
Ice Palace
Misery Mire
Turtle Rock
Ganon's Tower
Mimic Ledge
SW DM Foothills Cave (mirror from upper Bumper ledge)
Hammer Pegs (near purple chest)
Super Bomb cracked wall
Inconvenient location list:
Swamp left (two chests)
Mire left (two chests)
Hera basement
Eastern Palace Big Key chest (protected by anti-fairies)
Valuable Items are simply all items that are shown on the pause subscreen (Y, B, or A sections) minus Silver Arrows and plus Triforce Pieces, Magic Upgrades (1/2 or 1/4), and the Single Arrow. If keysanity is being used, you can additionally get hints for Small Keys or Big Keys but not hints for Maps or Compasses.
While the exact verbage of location names and item names can be found in the source code, here's a copy for reference:
Overworld Entrance naming:
Turtle Rock: Turtle Rock Main
Misery Mire: Misery Mire
Ice Palace: Ice Palace
Skull Woods Final Section: The back of Skull Woods
Death Mountain Return Cave (West): The SW DM Foothills Cave
Mimic Cave: Mimic Ledge
Dark World Hammer Peg Cave: The rows of pegs
Pyramid Fairy: The crack on the pyramid
Eastern Palace: Eastern Palace
Elder House (East): Elder House
Elder House (West): Elder House
Two Brothers House (East): Eastern Quarreling Brothers' house
Old Man Cave (West): The lower DM entrance
Hyrule Castle Entrance (South): The ground level castle door
Thieves Town: Thieves' Town
Bumper Cave (Bottom): The lower Bumper Cave
Swamp Palace: Swamp Palace
Dark Death Mountain Ledge (West): The East dark DM connector ledge
Dark Death Mountain Ledge (East): The East dark DM connector ledge
Superbunny Cave (Top): The summit of dark DM cave
Superbunny Cave (Bottom): The base of east dark DM
Hookshot Cave: The rock on dark DM
Desert Palace Entrance (South): The book sealed passage
Tower of Hera: The Tower of Hera
Two Brothers House (West): The door near the race game
Old Man Cave (East): The SW-most cave on west DM
Old Man House (Bottom): A cave with a door on west DM
Old Man House (Top): The eastmost cave on west DM
Death Mountain Return Cave (East): The westmost cave on west DM
Spectacle Rock Cave Peak: The highest cave on west DM
Spectacle Rock Cave: The right ledge on west DM
Spectacle Rock Cave (Bottom): The left ledge on west DM
