You can find larger bathrooms but you will also find that you will be paying more money for those rooms. Check out the mini-suites - if you have enough people, it may be cheaper than getting 2 rooms. Family suites usually have 2 bedrooms, 2 bathrooms, and a living room plus balcony. There are all sorts of room options available.
Handicapped accessible rooms are about twice as big as a regular room with a huge bathroom as it needs to be accessible for a wheelchair to enter and access the shower, etc.
Pictures are of the master bedroom bathroom from a family suite
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