Thanks all for your advice and thoughts!
@Sam Sheuh I've always addressed the concerns right away and get everything fixed but it seemed they want superficial improvements in order to attract more airbnb guests. The apartment is one of the best in my market due to location, off-street parking, and amenities.
@Thomas S. -- as they are at will with a lease agreement, I only need a 30 day notice per state requirement, but my question is have people given their tenants more notice than legally required? Thanks also for being the voice of reason regarding raising rent, I definitely know it's the smart thing to do. I am wondering though if it is possible to make money and still do some good in terms of providing affordable house in a low-income area? The other part of my thinking is strategy-wise, is it better to price the unit competitively so that tenants stay longer? If I raise the rent and get $2000 extra a year, what happens when tenants leave during a bad economy and I lose those gains due to a month or two of vacancies? You made a good point on the last part about language barrier being an excuse not to know/do things.
@Nick M. I do have a clause against subletting which is what I'll be using if I decide not to renew their lease. You are right about the language barrier being a problem-- the problem tenant will actually continue to be the go-between in my dealings with the remaining family which is why I just wanted to get rid of the family in general. The remaining family members are nice/no issues. I think if they leave, I can raise the rent to market level in one fell swoop but of course my idea was to underprice just below market level to have long term tenants.
Thanks again for all your input!