Just returned from a week in Bogota and didn't have a problem at either place I stayed.
Chica Friendly hotels-.
I stayed first at Lloyds apartasuites Parque 93- was only about $65 and was a small apartment with actual separate bedroom so not a studio. Small kitchen but more than adequate for any type of cooking. Bathroom decent as well, free WiFi. Zero issues with bringing girls in. The desk would call me and say "senor, we have miss Alejandra here to see you". And then I would say send her up. Hotel is located near Parque 93 which has a lot of clubs and restaurants and is a good location IMO.
Second place I stayed at was the W hotel. I wanted to go big for the weekend and got one of their nicer rooms. I was a little worried about bringing a girl into a 5 star hotel. However I had zero problems. One of the reasons was the layout of the hotel. The official front entrance and lobby where you would pass the front desk can be avoided by going to another entrance that faces the shopping mall and other high rises in that area not as much security and no front desk personnel. The very good club and disco are located on the 3rd floor so not a problem to have a girl meet you in lobby and then say you are going to the disco and then later from there take the other elevators up to your room.
W is a great hotel, I was impressed and the girls from the barrio were speechless.