As a tenant you are freed from the property maintenance; instead you are at mercy of landlords for that aspect, but I think they should and actually do the maintenance in practice.

Many properties in SK are offered via a peculiar scheme, the Housing Subscription System 주택청약제도, which is a result of convoluted history. Basically you should have a dedicated saving account, and your eligibility will be scored by multiple factors including the deposit sum of that account and in particular the period of non-ownership. When you buy a house your non-ownership counter resets; Jeonse will keep it. So if you use Jeonse as long as possible, your chance of being eligible for this scheme will increase.