It's actually not visible from the bridge..... I was there a few weeks ago and I too had your original 'bridge' waypoint as the damsorry my bad its the road bridge i have down. but i guess you would spot it from there....

Nice job putting all the locations together in the GPS file

I'd also recommend the Hotel Palantino. It's a bit cheaper as it's not on the side of the reservoir, but the rooms are really nice and the Thai restaurant is very good