Huge thanks to ℜuna for this tutorial.

01. Download & Extract "HL Save Game Editor" https://www.nexusmods.com/hogwartslegacy/mods/77
02. Download & Install "SQLiteStudio" https://sqlitestudio.pl/
03. And of course, Download & Extract The Village of Requirement https://www.nexusmods.com/hogwartslegacy/mods/620
04. Open the HL Save Game Editor on your browser
05. Click on UPLOAD SAVE and upload the Village of Requirement save file (HL-00-00.sav)
06. At the bottom of the left menu is the "Save File" button, click on it and click on DOWNLOAD DATABASE 1
07. Rename the downloaded file "sqldb1.sqlite" to something like "vsqldb1.sqlite" for easy recognition
08. Click on UPLOAD SAVE again and navigate to "C:\Users\[Username]\AppData\Local\Hogwarts Legacy\Saved\SaveGames\[Random Numbers]"
09. Sort your files by Date Modified so you'll know which is the latest save.
10. Make a backup of all the saves just in case.
11. Upload the latest save (Should be the top most file)
12. DOWNLOAD DATABASE 1 yet again (Step 06)
13. Now run your SQLiteStudio
14. Click on "Database" at the Top-Left and Add a database (Or Ctrl+O for shortcut)
15. Leave Database type as SQLite 3
16. Add your "sqldb1.sqlite" and "vsqldb1.sqlite"
17. You should have "sqldb1" and "vsqldb1" on the left now.
18. Double-Click on "vsqldb1" and scroll all the way down to find "TransfigurationDynamic"
19. Right-Click it and click Copy
20. Now Double-Click on "sqldb1" and find "TransfigurationDynamic" too (Make sure it's from "sqldb1" and not "vsqldb1" xd)
21. Right-Click it and Delete the table
22. Right-Click on the left empty area and click Paste
23. You can now close your SQLiteStudio
24. Back to your HL Save Game Editor browser (If you closed it off, you can import your latest save file again. Step 08 ~ Step 11)
25. In the "Save File" menu, under Custom DB Upload, click on Database 1 and upload your sqldb1.sqlite and click on GENERATE SAVE FILE
26. Rename the downloaded savefile "hlcustomsave.sav" to what your latest save file name was
27. Copy it to "C:\Users\[Username]\AppData\Local\Hogwarts Legacy\Saved\SaveGames\[Random Numbers]"
28. Run the game and load the top most save and it should work.

Note 1: All your existing creatures should be unaffected, at least for me.
Note 2: Rooms may have missing walls if your Room of Requirement is NOT expanded to the maximum.