Not as high-end, but the following are open on Mondays: La Mar - Peruvian/seafood, Kokkari - Greek, Bar Agricole - New American, 25 Lusk - New American, Aziza - Cal/Morrocan. All but the last are downtown or very easy access.
Or maybe research Open Table, and then here for reviews.
200 Jackson St., San Francisco, CA 94111
2316 Polk St., San Francisco, CA 94109
La Mar Cebicheria Peruana
Pier 1 1/2, The Embarcadero, San Francisco, CA 94111
355 11th Street, San Francisco, CA 94103