Laying tiles in the toilet - How / Where to start?

Hello everyone,

I am currently in the process of renovating my bathroom.

The old close-coupled toilet with vertical outlet is to be replaced by a Duravit DuraStyle Basic Rimless.
The wall tiles are to be painted with a 2K white paint, and the floor will get new tiles:

Tiles are bought (30x60).
I also have tile adhesive and primer.
Basic craftsmanship skills are also present.

Now, as a beginner tiler, I am wondering how to start.
I would lay from the door towards the window. In this orientation, I would lay the tiles from right to left. After the first row of tiles, I would wait until they are fixed and then continue laying towards the back – time and a spare toilet are available for that.

My biggest question is, where do I compensate the angles to the wall? Or rather, where do I cut the tiles?
And with which tool do I cut off the estimated 5° from the tile?
I have a manual tile cutter and a multitool with a diamond blade (for door cutouts, etc.).
I fear I need a tile saw, as I can only work with the manual cutter if the cut leaves enough tile to break cleanly.

The subfloor, as can be seen a bit in the pictures, is still somewhat uneven. I am considering leveling the entire floor about 3mm with leveling compound.
Does that make sense, or can I compensate the unevenness with the tile adhesive?

Maybe someone here can be kind and give me 1 or 2 tips.

Thank you very much in advance!

I find the tiles for this small bathroom way too dark, unattractive, and apparently the installation is quite a challenge. There are really great roll materials (e.g. with these Moroccan patterns) that you just have to cut to size. I once saw this in the restroom of a nice café and thought it looked great.

Thank you very much for the suggestion. Taste is known to be subjective, and the example with the Moroccan patterns is not to my liking. In general, I do not like these tile nets. However, I do not imagine carpet rolls to be easier to lay. Certainly, there are also a few other things to consider here compared to my tiles. There are challenges in life everywhere. If you have ever laid tiles, I would be very grateful for a tip regarding my concern. Everything else is off-topic.

The chosen format is quite unsuitable for the room. How wide is it, about 135cm? Better look for something in the format e.g. 75x75, then you can lay them in two rows, just as an example.

Paint the wall tiles before the new floor tiles are laid.

Tiles are too dark. The format is okay, but there are better ones!

Regarding your questions:

You cut tiles with an angle grinder. Diamond blade on it and off you go. You break the rest apart easily with a tile cutter. Baseboards cover unsightly edges.

Take a 2m straightedge and see how big the unevenness is. Up to about 3mm you can still level with tile adhesive, if it’s more then use leveling compound!

You should think carefully about how you lay them beforehand. Measuring and tracing paper is enough. Grout width is best at 3mm up to max 5mm.

I have tiled a lot in my life, if you have questions just get in touch again.

I always recommend beginners a laying system to keep it even. Otherwise you will surely get uneven joints and height differences. Later you can work without it, using a rubber mallet and spirit level.

Hello Bookstar, thanks for your tips. Tiles had already been selected and purchased. You learn something new... I bought an angle grinder with a diamond cutting disc. The cutting went really well, especially when you have to cut the 60cm tile lengthwise. Nevertheless, I cut the short side of the tile with a usual tile cutter. The dust generation with the angle grinder is really enormous. I tried the laying system, but somehow it was too wobbly for me. When tightening the wedges, for example, it pushed the joint open again, and I had to push it back together. Sometimes I then laid without the laying aid and only used tile spacers from above.