There are a few different types of flooring that can be considered easy to install in a bathroom. Sheet vinyl or linoleum is one option as these materials come in large sheets that can be cut to fit the space and then installed with adhesive. Another option is luxury vinyl tile which comes in smaller pieces but is still easy to install using adhesive. Ceramic tile is another possibility for bathrooms as it is easy to cut and install with mortar, however grout can be difficult to clean so this might not be the best option for high traffic areas.