Marbles Kids Museum in Raleigh, North Carolina has a private room with a rocking chair, changing table and plugs. Very small and furniture is getting old.
In Australia - The Sex Discrimination Act 1984 (SDA) makes it unlawful to discriminate against a person because of their sex, gender identity, intersex status, sexual orientation, marital or relationship status, family responsibilities, because they are pregnant or might become pregnant or because they are breastfeeding.
A woman has the right to breastfeed in public places, where ever she is allowed to be with without harassment or discrimination. This includes using a breast pump or expressing milk by hand.