One bathroom doing two jobs. An over bath screen adds a shower to an existing tub without losing any floor space, and it's a far smaller job than tearing the bath out.
Fixed panels are cheaper and have nothing to go wrong. Hinged panels fold back against the wall, which matters if you bathe small children. Measure the width of your bath edge at the wall end - not the length of the bath - and send it through. Shipped on specialised glass freight nationwide.