@Piotrek18 Glad that node got your data importing 
For your other issues, see this thread on obtaining the actual names for Wall Function:
https://forum.dynamobim.com/t/wall-property-function/11685/7?u=awilliams
A couple of posts down from this one, erfajo shares a Python code that would “translate” the numerical representation of the wall function enumeration to its name.
For getting the actual name of your Structural Material, you will need to plug in a Material.Name node and feed that back into your list. Dynamo Dictionary
If I’m understanding this correctly you want to see only the Level’s name and not the Level element that is represented by its’ name and elevation. In this case, just as you will need to use a Material.Name node to get your Structural Material’s name, you will need to plug your Levels into a Level.Name node to obtain the Level’s name, and feed that back into your data. Dynamo Dictionary