The phrase "had all to oneself" is commonly used to express the idea of having exclusive access or possession of something. However, there are several synonyms that can be used to convey a similar meaning. One such synonym is "had to oneself," which suggests complete ownership or control over something. Another synonym is "had sole possession," which implies that no one else has access or claim to the thing in question. Other possible synonyms include "had exclusive use," "had full control," and "had the place to oneself." Each of these phrases conveys the idea of having complete and uninterrupted access to something, without any interference from others.