There is no such thing as a "good" or conversely "bad" medical school. All medical schools are equal in the eyes of the GMC, and hence of the NHS. As the NHS is the only provider of medical training posts in the UK once you finish your medical degree, therefore there is no such thing as "good" or "bad" medical schools in the UK.
Of course, a medical school may not be a good fit for you but that will depend on your exact preferences on teaching style, facilities, location, etc. However these are all secondary to the primary requirement when applying to medicine in the UK of judiciously selecting which medical schools to apply to tactically, by researching their entry criteria, shortlisting methodologies, etc, and selecting 4 which you present the best profile for and have the best chance of being invited to interview for. If you just randomly choose medical schools because you think they are "good" or "bad" you will more likely than not end up applying to medical schools you had no chance of an interview for if you had actually looked at their methodologies and realised you didn't meet or would not score highly on one or more criteria.
That said, in terms of the former matters, Aston has only been running its medical course since 2018 and most of that time was disrupted by COVID. I imagine even current students can't give too much insight into what it is like "normally" except maybe the first years of the first cohort.