Sleep

Accommodation in Turkey varies from 5-star hotels to a simple tent pitched in a vast plateau. So the prices vary hugely as well.
Hotels
All major cities and tourist spots have 5-star hotels, many of them are owned by international hotel chains like Hilton, Sheraton, Ritz-Carlton, Conrad to name a few. Many of them are concrete blocks, however some, especially the ones out of cities, are bungalows with private gardens and private swimming pools.
If you are into holiday package kind of thing in a Mediterranean resort, you’d definitely find better rates when booking back at home rather than in Turkey itself. The difference is considerable, compared with what you’d pay when booking at home, you may end up paying twice as much if you simply walk in the resort.
Hostels and guesthouses
Youth hostels are not widespread, there are a few in Istanbul, mainly around Sultanahmet Square where Hagia Sophia and Blue Mosque are, and still fewer are recognized by Hostelling International (HI, former International Youth Hostel Federation, IYHF). However, guesthouses/pensions (pansiyon) provide cheaper accommodation than hotels, replacing the need for hostels for low-cost accommodation, regardless of their visitors’ age. Please note, pansiyon is the word in Turkish which is also used for small hotels with no star rankings, so somewhere with this name does not automatically mean it must be very cheap (expect up to 50 YTL daily per each person). B&Bs are also generally covered by the word pansiyon, as most of them present breakfast (not always included in the fee, so ask before deciding whether or not to stay there).
Unique in the country, Olympos to the southwest of Antalya is known for its pensions welcoming visitors in the wooden tree-houses or in wooden communal sleeping halls.
It is possible to rent a whole house with two rooms, a kitchen, a bathroom, and necessary furnitures such as beds, chairs, a table, a cooker, pots, pans, usually a refrigerator and sometimes even a TV. Four or more people can easily fit in these houses which are called apart hotels and can be found mainly in coastal towns of Marmara and Northern Aegean regions, which are more frequented by Turkish families rather than foreigners. They are generally flats in a low-story apartment building. They can be rented for as cheap as 25 YTL daily (not per person, this is the daily price for the whole house!), depending on location, season and the duration of your stay (the longer you stay, the cheaper you pay daily).