That is insane, sorry discussed this with a colleague we agree that £150 a week would be (above average but) feasible, £150 a month incl. bills is completely impossible nevermind the maximum you should be looking at.
Being honest there will be parties and the occasional fire alarm at night (not as much as is made out in that comment imho) there are ways to complain should the parties be too excessive and as far as I know there are no plans of building work on accommodation blocks though any major disruptions will be closely looked at.
What you should also understand is that the majority of 2nd through 4th years started looking for private accommodation for this year back in January, meaning a lot of the good, cheap places are long gone. Also as was earlier mentioned you are mostly going to find places don't include utilities (gas, electric and internet) in their rent. To give you an idea after bills my monthly rate is probably about £270-£280.
I am by no means saying don't go private, just giving you an alternate take.