Khash-Erdene Jalsan
Google
I had a great stay at Dalur Hostel.
Although it's a bit too far to walk to the city center, you can take a bus. Rooms and kitchen were clean enough. You have almost everything you can expect from a hostel.
The most of the staff were nice and friendly. I don't know if one person may need a bit more training, or it was just me.
The breakfast was great for the price, but I overlooked the fact that I had to leave earlier. Instead of booking via online, it's a bit more flexible if you pay upfront.