Hola a todos!
Just found this useful community, so excited to see so many prospective Hispanists. To answer CafeConCharis, I prefer smaller departments, since you get to know everybody and everybody's work can influence your own; it's easier to create a sense of intellectual community in a small department. In a big department, there might be more specialists in your field of study, but in the end, you'll end up with separate communities that won't interact with each other. Anyway, what you mentioned does sound strange, but I don't think that it will hurt to be the only M.A. student: you'll get more attention from faculty, which translates in better work, better research outputs and, ultimately, better opportunities in the job market. If you ask me it's a great advantage, at least in academic terms.
Mucha suerte a todxs!