I had my first at the GRH MLU (started there, anyway), and I would never go back there. Ever. And I recommend it to nobody. I don't know whether they were massively understaffed or whether they were just totally apathetic, but they were hopeless. The midwives in the post-natal unit seemed pretty appalled at how I'd been treated, so it wasn't just me feeling like it was crap. I had a debrief before my second's birth and my community midwife also said that that first birth hadn't been handled well.
Second was a C-section in the birth unit, and it was great. They were clearly short staffed, but not to a point where I felt care was poor.
Only people I know who tried at Cheltenham ended up being transferred to GRH anyway, so it was never even on my radar. I'm not even sure it was open by the time I had my second in mid-2022.