Free standing baths are only suitable for larger rooms where you have the ability to position the bath with free access all the way round, I regularly remove them from smaller bathrooms when doing re-fits, people like the aesthetics of the free standing bath and plough ahead and install them against a wall, the result is a disgusting accumulation of dust, fluff, pubic hair etc, this will happen quite quickly and you will regret having gone down this route. The concept of having the bath with no curtain is interesting though, in a bathroom around 2.1m square, most of the bathroom will be effected by splashing, the room will need a wet room floor former, and will require that the whole room is tanked prior to tiling, have a look at. (http://www.wetroominnovations.com) I usually use their Maxus formers and Purus gully traps. you can indeed get a flexible waste connection, have a look at McAlpine "Flexcon" range, these are available through any reputable merchants, these are quite substantial and would stand up to semi regular movement, if your free standing bath is an acrylic bath it won't be too heavy, so moving it would be quite straight forward, but I would suggest having small felt pads on the feet to protect the tiled surface, also from a drying point of view, Karcher have a very good little gadget for cleaning windows, which vacuums up the water, I often mention it to clients and any who have bought one have been delighted at how easy it is to use, it will leave the floor almost dry once you have used it, one note of caution would be your choice of floor tile, you will need a porcelain tile that has an R rating, this is a slip resistant rating and would be most advised. another note of caution, because the splashing will not be controlled, any vanity or wood based furniture will deteriorate. I hope this is of some help.

It would help to see a photo or a plan of the bathroom (if it hasn't been built yet). I have a bathroom with a curved shower door and a square of different coloured mosaic tiles in the centre of the floor, which I think looks good. (I'll take a pic). But I can't picture your idea, it might look odd. Would be good to see the space, Could you use them as the shower floor? Or are you using a shower tray? You could also use them on the wall as an accent/feature.

Inds, one thing that you need to think about is how you deal with the "external" corners. Forgetting this is a common mistake and means that the edge of the tile on one side or the other is exposed and this often leads to an ugly detail. With natural marble the option is often to mitre these edges and then lightly grind off the sharp edge to protect the stone. This is not n option with ceramic or porcelain tiles. I would try and find a tile that offers porcelain or ceramic trims which give a nice neat edge detail such as https://www.architecturalceramics.com/bianco-carrara-5225 If these trims are outside of your budget then there are a variety of stainless steel, aluminium or plastic options available, but ask the question of your tile supplier. Best of luck with your project.

Just thought I’d update this with a new layout I’m trying, ha ha. It was still bugging me as it was originally so I moved the sofa back by the window as I had previously tried it and instead of having the table by the back wall - I put it in the middle of the room (well off centre) I also moved he glass drinks cabinet over by the rad which breaks up the large expanse of white. So far it feels a lot better. Lots of space around the sides and between the main sofa and table and window sofa and I get to sit and watch the garden birds properly during the day. Going to live with it for a few more weeks then if I decide I prefer it this way then will move some of the the spider lights over the table! (At the moment we hit them when we walk under, lol!) Overall I don’t really like the tub sofa (maybe because it’s black?) and think just two chairs would look better there but it’s something I can work on in the future. (Please ignore artwork on the walls - I’ve removed it all now until I decide what’s stating!)