There are not much accommodation options available in Yamunotri. Many pilgrims prefer to stay in different areas located between Dehradun and Yamunotri. If you are looking for cheap hotels, are on a budget hotels while visiting Yamunotri then you can check the following links which will lead to the nearby places to Yamunotri.
You can also find Guest houses, Dharamshala and Ashrams on Yamunotri highway. They are most perfectly suited for tourists who wish to have a comfortable stay along with warm hospitality without spending heavy sums of money.
Travellers (pilgrims) mostly stay at hotels located between Dehradun and Yamunotri : Dehradun (Dehradun Hotels), Barkot (Hotels in Barkot), Sayana Chatti (Hotels in Sayanachatti), HanumanChatti (Hotels in Hunuman Chatti), Janki Chatti (Hotels in JanakiChatti).
Note: It would be better to book you Yamunotri accommodation in advance, generally for May-June and July 2017.