Room and board describes a situation where, in exchange for money

Money

Money is any object or record that is generally accepted as payment for goods and services and repayment of debts in a given country or socio-economic context. The main functions of money are distinguished as: a medium of exchange; a unit of account; a store of value; and, occasionally in the past,...

, labor

Manual labour

Manual labour , manual or manual work is physical work done by people, most especially in contrast to that done by machines, and also to that done by working animals...

 or other considerations, a person is provided with a place to live as well as meals on a comprehensive basis. In some countries this is sometimes translated to literally "room and food".

It also occurs in hotel-style accommodation for short stays.

Two commonly encountered boards are:

• Half Board, where the host provides only a breakfast
  Breakfast
  Breakfast is the first meal taken after rising from a night's sleep, most often eaten in the early morning before undertaking the day's work...
  
   and dinner
  Dinner
  Dinner is usually the name of the main meal of the day. Depending upon culture, dinner may be the second, third or fourth meal of the day. Originally, though, it referred to the first meal of the day, eaten around noon, and is still occasionally used for a noontime meal, if it is a large or main...
  
   meals.
• Full Board, where the host provides all three daily meals.

Another option is:

• Bed and breakfast
  Bed and breakfast
  A bed and breakfast is a small lodging establishment that offers overnight accommodation and breakfast, but usually does not offer other meals. Since the 1980s, the meaning of the term has also extended to include accommodations that are also known as "self-catering" establishments...
  
  , literally, a place to sleep and where breakfast is provided.