Not sure kids would be able to walk to it from the stop after El Cisne.... the road it's on has no pavement and it's quite a trek.... It's down the lane alongside Excalibur Castle.... I'd either hire a car and go, or get a taxi from Albir town centre (cheaper than getting a taxi from Beni!)....
Mind you having thought about it, once you've paid your bus fares to Albir and then a taxi, you might as well get a taxi from Beni if its only a one-off type trip!!