Take a Shuttle to Venus?

Venus is a planet with a thick atmosphere where a space shuttle could be the idea vehicle for transferring people and supplies between orbit and a floating base in the goldilocks zone. Venus's atmsophere has no free oxygen so normal engines jet engines wouldn't work but a shuttle like the russian Buran could easily "land" on Venus and be lifted up to a floating base by a balloon to be launched back to orbit by a waiting booster. On Venus a ship like Buran wouldn't reach the surface but come to rest floating in the atmosphere and provided it could survive the heat for a short time (i think shuttles are made to withstand heat) it could be lifted back up to the goldilocks zone by a balloon. If fuel could be processed from Venus's atmosphere then a human base on Venus could become a reality and Venus could be an alternative launching site for probes to the outer solar system. Usually airless worlds like the Moon are thought to be best for spaceports but on Venus recovery and refueling of a reuseable booster could be easy as the rocket wouldn't have to land on the surface but would float empty in the atmosphere until it was recovered.