Today’s “in” look is a free standing tub but if one wants to age-in-place, a lower tub is a better option. You can specify the tub you want. Most showrooms have tubs you can try for comfort. The back slant and length are important. If the tub is to have a deck so you can use it to sit, put your shoes on, lotion up or swing your legs into the tub, the distance from the tub rim to the edge detail can be close to 10”. This is sufficient for sitting and easier cleaning than a deeper deck. A separate spray located on the outer side will allow for rinsing the tub. The height of the deck should be chair height – 17” so adjust the flooring under the tub for this height and tie in any windowsills with back-splash material. Specify a honed finish on the floor and a soft rug to step on with your wet feet! The comforts of home!