Medicare doesn't pay long-term-care costs.
Medicare pays for up to 100 days at a skilled-care facility after a hospital stay.

Long Term Care Costs - Cost of Care Survey 2014 - Genworth

 These are 2014 costs.  They are rising 3 to 5% per year.
 Independent Living  $60,000 (NJ: 1bdrm 2,800/mo.;2 bdrm 3,800/mo
 Continuing Care Retirement Communities, or CCRCs.  you spend
  several hundred dollars to by your unit and still may pay a monthly fee.
  You get 80-100% bak when you move out, but sometimes not until it is refilled.
 Assisted Living     $33,000-$65,000 
  private bedroom    $36,000 - $76,000 
 In-Home Health Care 8 hrs  $57,000 ($40,000 - $70,000)
                   24 hrs.  $70,000 -$170,000 (I have a friend who got someone for $40,000)
        Health Aid $18-$30/hr
        Homemaker  $28-$25/hr
 Nursing Home       $72,000 - $110,000
 
 Memory care center $120,000-$150,000
 
   California
  Home Health Aid                 $54,600  (44 hrs/week)
  Assisted Living private 1 bdrm  $45,000
  Nursing Home Semi-private room  $86,800 (private room $104,000)
  

Home Health Care
Home health care is a variety of health care services that can be given in your home and is generally used by individuals with an illness or injury. Home health care helps an individual regain independence through part-time or intermittent skilled nursing care, physical therapy, occupational therapy, and/or speech therapy. Learn more at Medicare.gov.

Independent Living (Elderly housing)
Designed for seniors who require little or no assistance with the activities of daily living, independent living units provide services for residents such as housekeeping, laundry and meals. Residents of independent units may have some home health care services provided by in-house staff or an outside agency. These residents pay a rental rate or monthly fee.

See Senior Living