If you’re looking for a place with a view try Alekandar club (Ski staza). Situated on the hill overlooking the Ada bridge it’s a good place to have a cup coffee and enjoy the scenery. Also, it’s in the middle of the Kosutnjak forest so if you feel like hiking you can go for a walk just minutes from there.
There is a café and a restaurant if you feel hungry. During the winter it turns in mountain ski hut with a fireplace to keep you warm. You can even go skiing there but it’s a short track so it’s mostly for the kids to enjoy. During summer some events and concerts are held there. Caffe (tower-like wooden building) has smoking and the non-smoking floor inside.
Note: can get crowded during weekends when the weather is nice.