Been there for one night last October, during my visit to Machu Picchu.
The hotel is new, with basic and clean rooms, in-room safe (very small, just for a passport and wallet), heater, cable TV, comfy bed and free use of a computer at the lobby (slow connection). No minifridge in the room. Breakfast starts very early (good for those who plan to get the sunrise at the ruins).
The only downside is the location, right beside the train tracks (expect a lot of noise until the last train, which is around 9 or 10pm).
Recommended for those who want a simple and clean place to sleep in Aguas Calientes.