Take a table outside and watch the city pass by.
When we were there, there were no less than 100 pizzas on the menu. Don't go for a large one unless you're ravenous -- they're huge.
The service was fast and friendly and the food excellent. The house red wine was also good.
Ljubljanski Dvor serves a wide selection of Italian food and in perticular some nice and cheap pizzas. The pizzas come in three sizes, all larger than average - the medium was a bit too large for me on my own and I was really hungry! You can either sit inside or on the river terrace for great views. Beware though that this place gets very busy around lunchtime.
Lju dvor is nothing but mediocre and definitely overrated. try piazza or trta, they are so much better, even though not located in the touristical middle, but still less than 20 min bz walking from the tripple bridge