a)
Para 1: a quotation
Para 2: the arguments for, justifications & examples, linking words & expressions
Para 3: the arguments against, justifications & examples, linking words & expressions
Para 4: the writer’s opinion, linking words & expressions, a rhetorical question
b)
often conveniently located – amenities and facilities are close by
cheap rent – can save on car parking and public transport
flats are often small and cramped – little storage space
can be noisy – little privacy
no outside space – no garden