When I went there (back in JJanuary 2012!), I presented myself to the rangers here:
https://goo.gl/maps/NnsMvTQVRBS2
I told them I wanted to see some birds and they sent one of the rangers with me to the hut overlooking the western part of the marsh adjacent to the golf course. I played tape shortly and got Apolinar's Wren from that hut:
https://colombia.observation.org/waarneming/view/81999187
15 minutes later I walked to the other side of the road and followed a little dirt road to the end, from where I got good looks on the Southern part of the Marsh and saw Spot-flanked Gallinule and Bogota Rail:
https://colombia.observation.org/waarneming/view/81999196
After this, I went back and passed the ranger's post. There is a kind of foot bridge that connects the road to the golf course. I walked over this bridge here:
https://goo.gl/maps/PRZqaRsM9GC2
And in the Southern park of the golf course I saw a couple of Silvery-throated Spinetails coming readily to play-back:
https://colombia.observation.org/waarneming/view/133651931
I walked from the bridge to the Spinetails trying to avoid the golfers as much as possible, but they didn't seem to care about the birding intruder on their (private) property. I don't know how much of a problem it would be to show up at the entrance of the golf course. But I feel the course itself is not very interesting for birds (especially not for the target birds).
The whole area (and the road) was kind of flooded. There weren't many people walking (for pleasure or anything else) around, so it felt safe. I had to walk back to the hamlet of San Lorenzo to catch a bus. (somewhere here:
https://goo.gl/maps/wFNULE2FqMz ) There were many people there waiting for a bus in the rain. I was fully equiped (back-pack etc) and very much looked like a tourist that had all his (expensive) belongings with. Still all people were very friendly and (as much as me) occupied trying to find a bus ride. It was raining heavily. That didn't hamper the birding too much (I missed the Conebill though, and walking the marsh was impossible with the flooding), but maybe it hampered the thieves
