Warung Renah is the more informal version of a Blauwgrond meal: a small Javanese-Surinamese kitchen with straightforward seating. It sits on the same food strip as Mirosso, so you can look at both before choosing.
No reliable opening hours are published. Carry cash, check whether it is open before travelling across town, and do not expect central Paramaribo restaurant polish; the neighbourhood atmosphere is the reason to come.