I bought three of these - installed it myself (50 yo F) easily on three different types of toilets. I was worried about the non-heated water, but it’s truly ok/comfortable.  Controls are easy to use (be gentle first time!!).   The frame shows a bit at the back of the bowl with the seat down, but aesthetically pleasing.  Excellent product considering you don’t need electrical or other water lines, so it’s an easy low cost option for the comfort of a basic bidet.