The blue is nice, but I feel like Tego: I'm afraid that eventually people will get tired of it. That's why we'll go with neutral white and anthracite-colored floor tiles. Color will come in with towels and accessories, and if I want a new color, that can be done quickly.
So, quite a bit is happening here, but you just can't see it.
The conduit was laid, the house connection (and yes, it goes through the foundation slab), and now the pipes for the geothermal system with soil activation have also been laid and immediately packed in sand. That's why it looks more like a beach now. The white strands at the back are from the geothermal pipes:
Now the insulation will go on (the pink boards visible at the edges), then an EPDM membrane, and then the wooden floor panel on top.