I am too pragmatic to have a claw foot tub or even a freestanding one...I vote for the flat bottom bath (but make it a nice one) and PLEASE sit in the model before you install it!!!!

I have a shower over bath combo' which its plastic resin something? It's a old bungalow and pitifully small. The amount of times I have nearly slipped over getting out, or lost my balance with soap in my eyes/ or after having a glass of wine. hate hate it. I did see a shower room with a additional hand held device and a over head shower. I thought that good for the odd squirt your feet down. The next owners will probably rip it all out and start again any way when design ideas change.

Hi LouieT, answers to your q's - Side Windows - not too fussed about them but we'd need windows whether they are the existing ones or new/enlarged I guess depends where they end up. In the current floorplan the one in the toilet is a small window which is boarded up atm. The one in the bathroom is a long/tall louvre window - works quite well in the bathroom - not so sure about how it will go in winter though. Plan with WC in laundry - its 965mm to the window so should fit, however I don't think a WC in that position would work for us as it means people needing to walk to the back of the house to go to the toilet - and I could imagine our ensuite becoming the default toilet if thats the case. Moving laundry - I think we'd probably need a window. Losing large storage - i think we're resigned to losing it. However I think if we can maintain the current laundry or a reasonable portion of it we can owrk in some more storage there. Having had a look at the 3 I think the first one (where current laundry is maintained) is the best. I had a play in sketchup with my measurements and I think your first 3D plan and the first of the three can fit with a few tweaks. See below...

Is it just a plain bath or a claw foot?. If it's claw foot, look at getting it re-enamelled (yes $$$), if plain bath, then replace it. There are various forms of re-finishing. The best being re-enamelling (they sandblast the bath back to original then rebake it). Cheaper versions include self-painting (White Knight paints) or automotive spraying. You will likely only get a few years out of either before it starts to come away. I personally don't think you can compare steel baths to acrylic baths. If you are used to steel, stick with it.