Just last week we got word that the ground-floor spaces of the Renoir Hotel at 7th and Market were getting a hipster-fication of sorts, with a new bar from the Bon Vivants called Rio Grande set for a June 1 opening (in what was once Etiquette), and a new rotating pop-up space and commercial kitchen called SF FoodLab, from Matt Cohen of Off the Grid and partners Gabriel Cole and Mark Walker. It turns out the first pop-up will be debuting there, at 1106 Market, tomorrow, May 23, and it will be Puerto Rican food from San Rafael's Sol Food. The FoodLab kids just Instagrammed this photo of the entry to the bare, tiled space that was most recently home to Little Joe's, and they're obviously racing the get the place cleaned up and ready. Sol Food will open at 10:30 a.m. for lunch only until 2 p.m., and they'll reappear again on Thursday, and every weekday through June except for Memorial Day. [Earlier] Update: Here are some more details about dinner pop-ups coming as well.