We are going to Prague for 3 days next week and are staying in the Mala Strana. Wondering if anybody has any good recs for a semi casual dining experience in that neighborhood. We will have my 81 year old mother so I am not talking a noisy pub or the likes. I quite like the idea of a restaurant that is in one of the caves that seem to be all over. We will be at the Mandarin Oriental and would like to be able to walk. Thanks in advance!