its a very quick walk to one side but like a 10-15 minute walk to the other side of campus (campus is HUGE). but as your course will be all over the place its gonna be like that even if youre in catered
the distance between broad gate and florance boot (catered on campus) is like a three minute walk
I think if you're looking for self catered you should look at Broadgate Park and Opal (and the surrounding sites near Opal). Broadgate Park is just west of the campus, close to Beeston, but it's direct opposite to QMC (your department). Don't quote me on this but Opal might actually be closer, it's North of the Jubilee campus and from experience takes you around 15-20 minutes to walk. Not tried from Broadgate Park to QMC area but it's likely around the same.
I would say Broadgate Park is in a nicer location, Opal feels slightly dingy to me but the rooms in Opal are better than Broadgate Park I feel but I've only seen an ensuite and a shared bathroom room in Broadgate but a studio in Opal. It's also nicer to walk across the campus to get back home rather than walking along Derby and Triumph Road.
The 36 bus goes from Broadgate to QMC, the hoppers might get you close as well. I think the Opal area have buses to University Park but I don't think they run 7 days a week.