I will be traveling next July with my wife and 2 teenage daughters throughout Italy. I have done well so far finding apartments on Homeaway and airbnb in all of our other destinations, but am having a little trouble finding something nice in the Cinque Terre. Any recommendations? I would prefer something in Riomaggiore or Manarola, in the neighborhood of $140 to $150 US per night.
Hotel Villa Steno
Via Roma, 109 - 19016 Monterosso al Mare (SP) - Cinque Terre - Italy
Tel. 0039 0187 817028-818336 - Fax 0039 0187 817354
http://www.villasteno.com/
You can contact them and see if they have an apartment. I rented one from them last year. Its separate from the hotel. lovely. http://sites.google.com/site/casapalasgio Not sure if its big enough, but worth a try.
We enjoyed Due Fari in Manarola very much. Note it is not really two bedrooms, but two sleeping spaces separated by a partial wall. It is spacious enough, though, and the terrace is very large and nice.
My husband and I rented an apartment in Riomaggiore 2 years ago. We loved it. Here is a link to the company we used.
http://www.acasa5terre.it/houses.php
Although you stated that you want to stay in Riomaggiore or Manarola, have you considered Monterosso? It occurred to me that the larger town might be more appealing to your teenage daughters, especially the great beaches.