I find barbell rows useless for as an upper back exercise. I mainly feel them in my posterior chain. My lats grow enough from deadlifts.
My uni's gym is normally quite empty in January because everyone has exams. ****, I've only been to my uni's gym once in January and I can't remember there being much people there at all.
The second week after freshers is always the busiest because people have sobered up and realised that either their arms are too small to attract the club skanks or their bellies and arses are too flabby to attract the rugby players or the manwhores.