Ideally the best route is to take a 28 (25 40mns tram from the university) inside and you will find one of the most modern zoo entrances at least Durstboncha resorts generally appear with animals and resources to support them well maintained. No public transport within 10 minutes walk and service will not be released. There are few taxis outside during the weekend, all are some internal services to the best travel plans, but have a very pleasant experience,