I knew someone who had a room in Rosser, and the shower really does take up a lot of space. But I found having an en-suite in first year helped me to get into the whole living with people I didn't know thing! I was in Alexandra Halls, which I would recommend as a hall choice if you'd rather be in town (plus the seafront halls tend to have bigger rooms). It means you have to tackle the hill for lectures, but being in town was great for everything else in my opinion.