Hey Jules,
Might I suggest RECORDING some of the noises that are preventing you to get 'reasonable use and enjoyment' of the property you are renting!!! I have a friend who had a similar issue with another renter [it wasn't the landlord, but complain was similar at least] She had audio of lots of 'interesting and distracting' activities [you can imagine, I'm sure] and the landlord was kicking HER out because of her complaining and it got pretty complicated, but evidence like that could help. she also had video [which gives good perspective, too], of her trying to read a book, watch TV, talk on the phone normal stuff.. She ended up winning the case, but moved soon anyway. Just a thought, better living thru technology.