Not really rules for thumb, but I'd suggest thinking about:
- your definition of "location convenience". ie. the relative importance to you of having hip restaurants/shops actually in your own neighbourhood vs. being able to hop on a short train ride/bicycle to get to them.
- the relative importance of daily life amenities. I’d argue that having supermarkets, drug stores, convenience stores etc. close by and (preferably) in the same direction you’d walk home from the station will be much more convenient than restaurants or boutiques that you'll only visit occasionally.
- how important you feel neighbourhood cache is to you. Do you want people to be impressed when you tell them where you live? I’m not trying to sound facetious, because prestige is a very real factor for people in choosing a location… so you need to be honest with yourself and assess how important this is for you (or your spouse), and price it in if necessary.
- resale value. This being Japan, I expect my house to go down in value, but I want to minimize that as much as possible. Some sh**box a 20min walk uphill from the station, no matter what station, will have a higher rate of value depreciation than one well situated. A larger plot of land that could be split into two or three to be resold will obviously have more resale value than one that has already been split. This was important for me as I may one day leave Japan, and wanted to minimize the potential downside in an exit became necessary.