Seaford is one of the most liveable suburbs in Melbourne. This is probably more due to having Frankston on the door step than its proximity to trains and freeways. (Frankston was recently voted in the top five most liveable suburbs of Melbourne)
Seaford is roughly a 45 - 50 min train to Flinders St or a 35 - 45 min drive via eastlink to Kingsway.
Back to Frankston - this place has all the amenities of a large regional city and more, including cinema, uni, tafe, hospital as well as the brilliant Bayside Shopping Centre, Power Centre, a growing coffee and restaurant culture and great weather always 2 degs cooler than the cbd.
In terms of flooding last week, Kananook Ck didn't flood nor did any parts of Seaford. This is because the weather is generally very mild due to its geographic location on the edge of the bay - thus missing hail storms, heavy rain and extreme heat.
Having lived in cities, towns and suburbs from SE QLD to Tassie and inner eastern Melbourne i can say Seaford is by far the most liveable. Most of the people living here cant believe the prices still havent skyrocketed!
As a homeowner in Seaford, i am saving up for an IP in Frankston or Seaford in the next few years.