I've just had lunch with my wife here. I searched for a recommended restaurant nearby, and TripAdvisor directed me to this place. There's a little misccuracy though: the exact location is about 600 m north from where this application pinpoints.
It's an old square-shape restaurant famous for its modified western food. We tried the Sirloin Hotplate that only cost Rp 24k. You cannot expect too much for the taste with price like that, can you? But it's worthed to try.
But you gotta try the ice creams. The "Kusuma Sari Ice Cream" (Rp 18k) is one of the kind. We also tried the "Tutty-frutty" (Rp 16k). In my opinion, it's better than the Ragusa Ice Cream in Jakarta, and, of course, cheaper.
I had only a little disappointment: it's the ambience. The room is filled with too many tables. When we came, it was too noisy. We had to watch our walk, because the distance between tables was less than a meter.
Anyway, we love this restaurant. We definitely will come back later.