When I used to live in the neighbourhood of Strašnice, I passed along Gutovka every day but never really had a chance to go there.
Gutovka is a large compound where you can find a playground for kids with a waterworld, a climbing wall, a skatepark and even a minigolf course (plus some other sports playgrounds).
If you have kids and you are short of ideas on what to do in the city centre, take them to Gutovka. Besides the usual attractions, they will find the unique waterworld. It contains 15 playing components like a water mill, a water screw etc. And if you are in a sporty mood, you can practice your skills at the (paid) climbing wall or minigolf course :-). There is a restaurant in the area, so if you want some refreshment, you can get it.
Last but not least: Gutovka is situated a few steps from “Strašnická” metro station (green line A) – just a 9 minute ride from the city centre (“Muzeum” metro station). One note for dogs owners: dogs are not allowed there.