I am aware of there being a video guide, but most of those videos I saw were hours long. When I'm looking for one thing or another that is a lot to shift through. So, I knuckled down, took notes, and made this guide.

My main gripe is the fact I can't examine or take items until a point in the story...

Sewing scissors: 205 drawer
Hanger : 205 closet
Screwdriver: 205 hair drain
Room 206 Key: 2F hallway, in front of 201
Chisel: 206 closet

Hammer: 2F storage room
202 Key: 206 safe
Video Camera: 308 near surprise
302 Key: room 303 vac tube (after Nana joins)
Crank Handle: 308 on surprise (after Nana joins)

Lubricating Oil: 302 bathroom floor (after window is checked)
Long Straw: 302 shelf (after window is checked)
Spray Oil: Mix Oil and Straw
Sharp Shard of Glass: 302 floor under shelf (after window is checked)
2nd Floor Emergency Staircase Key: Outside air unit

Tripod: 308 under camera (after Nana joins)
Friend's Hat: Outside
Fire Tongs: Parking area, near stairs (after office is open)
Rubber Tape: 308 bed (after music box event)
Simple Selfie Stick: Mix tongs and tape

100 yen coin: 1F under vending machine(after music box event and ghost event)
Doll's Head: 1F in machine
Doll in box: 1F office drawer
Hotel Office Key: 204 (after event to search room) (The music box is now there, check it)
Piano Wire: 1F office, need tongs to get

Sakaki Branch: 1F office vac tube
Stepladder: Parking area, near hair(after office is open)
Cassette Tape: 1F office, shrine
Spikey Metal Cylinder: 1F office desk(after finding music box)
Mainspring: 303 (in cassette player)

Small Key: 204, in suit pocket (after doll head)
Glow in the dark spray paint: 201 floor near door
Crayon: 305 in drawer
Candle: 308 in drawer
Matches: Parking, in pile of junk

Newspaper Article About a Parent-Child Double Suicide: Parking, floor
Business Journal: Glow in the dark paint toys: Room 206 table
Business Journal: Linen room keys: Room 303 floor near bed
Business Journal: Outside key for emergency staircase: 3F hall near elevator
Business Journal:The shadows in the hotel: Room 305 floor near bed

Business Journal:About the placement of the mascot costume: Room 302 table
Father's Journal:The doll in a box which my daughter found : Room 204 floor
Father's Memoir: Memories with my daughter : Room 206 drawer
Father's Journal: About my daughter : Room 205 table
Photo of a parent and child at Fantasy Land : Room 205 floor

Father's Journal: Music box :1F office desk
Scrapbook: Fantasy Land closing : Room 202 table
Scrapbook:Tokaezuka construction accident : Room 305 table
Scrapbook:Hotel blueprints :1F office desk drawer
Scrapbook: Tokaezuka's Ground-breaking ceremony :1F office desk drawer

While I can understand why I shouldn't be able to take everything I find, the fact I couldn't even examine the stepladder until an event was triggered is annoying. For all I knew it was a background object. So much backtracking....