An officer of LSE explained that applicants had very high expectations when they applied for an elite university and that's why they were less likely to be satisfied. Nevertheless, this can't explain the higher student satisfaction in other elite universities.
My friend, whose son is in LSE, told me that student accommodation is a big issue there. I wonder this is also true for UCL which is only several streets away.
I joined the LSE admission talk in 2016, the speaker also mentioned that the dorms capacity is a big issues over the years ! My friend suggested to rent other apartment among the boys to share the rental.