btw what course have you applied for?
I applied for Hiatt Baker then took a gap year, and the accommodation application was withdrawn for that year until the next year. By the summer of the next year since I had deferred I had an unconditional place to study a 4 year MA. I applied for Goldney first, followed by various halls including ones from Stoke Bishop and Clifton. I got made an offer for 0 of my 9 choices and switched uni.
I have family members who have stayed in Wills, it's historically renowned for being the 'posh hall', but still part of the rowdy student atmosphere of S.B. Goldney is a beautiful location, not as far out as Wills, but slightly smaller/quieter & extremely highly subscribed.
Goldney is notoriously difficult to get into; sure, it's a gorgeous halls, but if you're stuck between just those 2, I'd highly recommend opting for Wills before Goldney purely on the basis you're much more likely to get in.