City tour by bike this weekend

Hi guys,
I am thinking of doing a city tour by bike this saturday or sunday.
It s about 75 Pesos for 3 to 4 hours and bikes are provided (obviously).
I found one tour by Tangol (Sunday at 2 pm) and another by (saturday at 2 o,) (out of probably some hundreds...).
So if anyone is interested, feel free to join!
I think it s a good way to get to know the city in a not that "touristy" way like sitting in a bus and of course - it burns some calories :)