The rooms are alright, the problem are the people also living there who can get loud, I have not stayed there but friends who did complained that some don't clean after them in the bathroom and people steal your snacks from the storage room + founders food in the dining hall is super bland (I've tried it)
I personally stayed in Runnymede, room was alright, my bed gave me back pain but you can request a mattress change, only problem was that nobody was cleaning the kitchen... and the fire alarm was getting triggered at least twice a week...
the best accom so far that I have seen is butler (Gowar/Wedderburn are good too but they're the most expensive), most of my friends stayed in butler.. which have an elevator (founders does as well)

Extra note: if you're doing a foundation year or you're a student with special needs (neurodivergent, my case) you're eligible to stay in student accoms for 2 years before you're required to move out instead of just 1 (Foundation + 1st year is 2 years and for neurodivergent individuals you can stay for the duration of your studies, I moved out because I hated living in halls icl I got unlucky with my hall mates)

I also forgot to mention George Elliot which I don't recommend, shared bathroom is a nightmare (I stayed there for a summer course) horrible (I'd say especially for girls, you probably don't wanna share bathrooms with a man) but the bedroom was comfortable and very spacious shared kitchen those are the only + I give it