There is a paved road leading up this hill. It is a simple, 20 minute walk and on top of the hill you can hike smaller paths if you like.
One of the easiest hikes in this list but not as picturesque than Monserrate.
No permit required.
there is no base camp (except the whole city of Bogota)
no guide needed
Cerro de la Conejera is a small hill in the north of Bogota. This is arguably one of the easiest peaks in this list. Once you reach the area conveniently by uber, you can hike up this hill within 20-30 minutes. Mind that it is very crowded on weekends, but still this is the best time to go as it is safer. Overall, the area is deemed rather safe in terms of Colombian status. You have a great view of the city and most of the hike is up a brought street. Still, you will reach more than 2600 meters and you might feel the air, especially if you haven't spend much time in Bogota yet.
There is not really an unfriendly side on weekends, except that it is a bit difficult to go there and it is not very exciting.