My partner and I stayed at the Three Explorers a decade ago when our relationship was newly minted. Doing a nostalgia trip to the Blue Mountains in October 2013 we were happy to see the Three Explorers still doing good business, albeit under new management.
The motel is tidy, an in excellent location a few minutes walk from Echo Point, and about ten minutes walk from the main street of Katoomba. The Three Explorers has been renovated since last we stayed, and the manager was very helpful and informative when we arrived quite a bit later than we'd expected, and following his advice we made the most of day passes to Scenic World, and hiking in Jamison Valley.
Three explorers remains tidy, affordable, and the location is superb.