In reply to heidi123:
The road that leads to the Ref Renclusa roadhead (A139) has a turnoff about 10km before the roadhead (almost due W of the massif); around 5 km from Benasque. It's a place called Plan de Senarta and there is also a campsite there (1375m). From there follow the road, generally SEto Puente de Coronas (1950m, about 8km). There a refuge Pecadores a little further on there.
Follow a trail up the R bank (W side) of the stream NE then N to a small lake at 2220m with some ruined shepherds' huts (just over 1km). It's a good path, with zigzags. Then leve the lake E then N to aother, larger lake at 2635m (1km). Now NW to another lake at 2275m, through a narrowing canyon and finally E to the last lake at 2750m. Both these have good camping spots and a spectacular view. You can see the obvious col to the NE up snow/ice (3198m) - this is where it rejoins the normal route (and the crowds).
In terms of public transport, whatever transport gets you to Renclusa will pass the turnoff at Senarta. If there ae just 2 of you I'd expect you'd be able to hitch the road to Puenta de Coronas. I think there are buses at least as far as Benasque. Then hitch, or, at worst, take 2 an extra day of approach.
The map is Maladeta-Aneto (1:25,000; Pirineo Aragones; Editorial; Alpina)
Have a blast
J
john