For docs/tutorials, be sure to review Semantic Model | openHAB in the Getting Started Tutorial and I wrote a deeper dive into the model at A Deep Dive into the Semantic Model for details on the semantic model.
The Location, Equipment, and Properties tabs of the Overview page are driven by the semantic model and the “default list item widget” Item metadata.
There is no right or wrong answer here. But I recommend you think of your end users. If you present this UI to house guests, what makes the most sense for them?
Here is how I have mine (zoomed out to fit on one screen):
The model looks like this:
Obviously I’ve done further customization, all of which is covered in the Getting Started Tutorial.
Finally, don’t make the common mistake of creating a Location Item which represents a lat/lon coordinate when you need to create a Group with a location semantic tag