ಮೈಸೂರು - ವಾರಣಾಸಿ ಎಕ್ಸ್‌ಪ್ರೆಸ್: ಕಾವೇರಿ ಮತ್ತು ಗಂಗಾ ನದಿಗಳ ಸಂಪರ್ಕ ಸೇತುವೆ - Vishwanath Joshi

Plenty of restaurants are available near LJN/LKO. You don't have to think about food in Lucknow. Whole city is a foodie's paradise.
Also there are plenty of hotels near LJN/LKO. But I won't recommend oyo hotels near LKO/LJN, because of their third class service (based on my own experience). Once I stayed in Hotel Vishwanath, which is hardly 300-400 m from LJN/LKO. Breakfast, Lunch, Dinner, rooms, service everything was superb.

---