DoubleTree by Hilton Hotel Cambridge City Centre

Website
Address: Granta Place Mill Lane, Cambridge, CB2 1RT, United Kingdom
Hotel to Conference: 30 mins walking, 20 mins U bus, 12 mins cab
Rate: ~200€ (King guest room)

More colleges here:

https://www.booking.com/city/fr/lyon

More B&Bs here:

https://www. [...] Rate: ~130€ (Standard Double)