where is the good location for a family with a 2years old baby

plan to buy a two bedrooms flats with 250000£ budget for us. which location is good with this money, cash buy . have a little one 2 years old. friends suggested Canary Wharf or Canada Water. just moved in London . confused , ple give me some advices. sorry for can’t type Chinese. thx. XXXXXXXXXxx