Hello, just about to lay a new floor in our bathroom. Wood effect porcelain tiles but unsure as to best layout. It's a long and relatively narrow room measuring 12ft x 6ft approx. Rolltop Bath more or less central along one (long) walk with double vanity unit opposite... so thin strip of tiles visible down the centre part. Thinking grout thickness of 3mm but don't know whether to go random, offset, or tile pattern. Tile size 900 x 150mm. All responses gratefully received!