The comments above are helpful. As a generalisation, I would add that a family home retains its bath for young children (and, indeed young grandchildren); most adults opt for a shower these days. So great that you have a bath somewhere, albeit any young children would need to walk through the bedroom to get to it. Depending on how big your bathroom is actually, and your budget, we had a similar challenge and fitted a shower space with hinged shower door in a wet room style design so that the family bathroom had both bath and shower. The hinged door opens up the floor space and prevents the room being sprayed; in fact only the bath itself gets wet, and even then not significantly. This may be of interest. The room footprint in this case was 1.9m by 2.1m. Other things to consider include opening the bathroom door outwards to create better use of the floor space you have. We also moved the door in this case to fit the sink comfortably, and fitted a small bath (which is fine for children). Hope this helps in some way.
Nick
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wet room one floor. same size as ours
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