Possibly. Whether or not African violets will thrive in bathrooms seems to depend on who you ask. CBS News says, “African violets like humid rooms, so a sunny bathroom or kitchen window can work well.” MasterClass, on the other hand, says, “The fuzzy leaves of African violets need to stay dry, or they will start to rot. African violets grow best in dry places like home offices or living rooms but should stay away from high-humidity locations like bathrooms or kitchens.” So, it seems that your mileage may vary considerably here. You can give it a try, but if your African violet is not responding well to the humid conditions of your bathroom, you should move it somewhere drier.