We spent a total of 6 nights at Casa Obrapia (3 nights at the beginning and 3 nights at the end f our travels) and really loved the stylish decor, cleanliness, and location. They serve breakfast and dinner upon requests, but the options are very limited for vegetarians; we only ate (breakfast) once during our stay. We recommend paying a couple of more CUCs and go to the breakfast buffet at the Hotel Ingletera (5-10 minutes walk). The house itself is situated on a not the best looking street, but it's very safe (we've walked home late a few times and had no issues) and one block from Calle Obispo, the main vein of Havana Vieja. You're walking distance to everything!