There is a small shelter, similar to a bus stop on each side of the platform. That’s all there is. No restrooms, indoor waiting area, food, and the place is completely unattended. Like Vanity said you may see if Monas/Inez’s can pick you up.
She is also correct with the delays, I’ve heard of delays of 30 hours. For the most part, the westbound (Reno to Elko) is a little bit more reliable than the Eastbound (SLC to Elko) as the train runs from San Francisco to Chicago, so the eastbound train has a lot more chances for something to go wrong.