Know Before You Go
From Sicuani, follow signs to Arequipa (a left turn if you are on the main highway facing toward Cuzco). Continue on that road until you begin seeing signs for Quehue. From Quehue, continue through town to the west (probably best to ask directions from a local at this point). When you cross the Apurímac River on the steel roadway bridge, Q'eswachaka is on your right. There is one walkway down to it on either side of the roadway bridge (about 100 m away from the bridge in both cases).
The geocoordinates are -14.3811214,-71.484012.