Hiya I'm a first year on campus at Sussex - the noise situation in Lewes Court is quite bad right now and it's forced the uni to reimburse students affected by the construction in certain Lewes Court flats - however, it predominantly affects a few of the blocks, not all of them, however it is a gamble as to whether you'll be near the construction or not!! Also sorry but I don't know much about Stanmer Court, it is literally right next to the motorway and Falmer train station though so I'm sure some noise gets in.