I do not have time for that.

You should really consider remaking all these for the DLC version.

You did great work, my man.

Do you have the model? If so try
Transferring the .fbx file and .jpg file of the model into the import directory
C:\Users\[Your username]AppData\Local\Colossal Order\Cities_Skylines\Addons\Import
Create an Asset
Building
High Residential Icon
Pick a Template depending on how big the model is
Choose the model from the import (left column)

https://youtu.be/2ShfdBv-mF4?t=681

I'm not sure if it works. If you give me the model files I could try it.

I need advice or tutorial how to do it. Do You have any articles, tutorials or videos how to do it - let me know.

Have you made it into a high density residential building? I would really like it if it were.

Benetto: If you make it a High Density Residential building, users can work it into the mod "Ploppable RICO" to enable placement. Then it will function as a building that people live in. You can also do the Ploppable RICO yourself, if you want.

Thank You for advice. I've just added it on my list and I'll try to implement it during christmas break :)

If there was someway to make it a groweable residentral building and make it mostly attract young adults seeking futher education would make it more realistic.