This train is a very huge demanded train from Odisha.
I am giving tip for Sleeper classes.
After boarding from BBS , go to Upper berth (in case having Lower berth seat , exchange with someone just for some time) and go to sleep. Telling you do this or else your whole "happy morning" will turn into a "Bad morning".
From BBS to VZM...
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, specially between KUR to CHE , this train runs as a Intercity train. SL classes are packed with daily travellers and waiting holders. Beggars will give you a headache and transgenders will suck up your money. (They are very shameless)
But once train reached VSKP , It all becomes COMPLETELY empty. Seriously i was shocked to see the complete empty and cleaned SL coach after i woke up. All thanks to Ratnachal express which takes away all the intercity day travellers.
After this the whole journey from VSKP to SBC is a awesome one with full of heavy crossings and views of Mighty Godavari and Krishna rivers.
After VSKP , the next cleaning is done at BZA station and after that from BZA to SBC , it runs as it is , but still the coach condition of these ECoR is quite good.
I would suggest the VSKP folks who wish to travel to Bangalore, Take this train.
Because it is the only Non-VSKP starting train to bangalore who have General quota for VSKP to SBC also. So BBS & VSKP both share same quotas.
Best chances of getting confirm seats if you book well 1 week ahead of time in SL. AC coaches are very badly demanded for this train.
For VSKP to SBC , you can easily opt SL class (unless its not some Festive season like Pongal or Diwali). Best thing is Food.
The pantry is quite good and warm-good quality food is provided.

1 ΣChains between VSKP/Visakhapatnam Junction and MAO/Madgaon Junction
12739/Visakhapatnam - Secunderabad Garib Rath Express
from Station VSKP/Visakhapatnam Junction to Station SC/Secunderabad Junction
17021/Hyderabad - Vasco-da-Gama Weekly Express
from Station SC/Secunderabad Junction to Station MAO/Madgaon Junction...
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About VSKP Retiring Room & Dormitory :
1. There is direct entry to VSKP retiring room section from the FOB at BZA end (If coming from PFs 2-8). Direction markings available. If coming from outside, instead of entering main entrance, move towards right, towards premium car parking. At the end you have another entrance (quite big one) to PF 1 and same is for retiring rooms with the counter situated there too.
2. After you arrive at the station, you have to get a slip made in your name at the...
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counter situated below the retiring room (3 counters are there - PF ticket, enquiry & RR). On the slip you have to write your name & address and the person sitting will countersign it. Give that to the caretaker and now you are free to enter your booked accomodation.
3. In non ac dormitory, single beds (not in bunk style) are arranged in a hall just like hospital ward. Whereas in AC dormitory you get your own cubicle with the entrance to your bed guarded by a curtain, ensuring you get adequate privacy. Had it been door in place of curtains then it would have been private rooms.
3. The dormitories are clean including the washrooms and cleaning process goes on all the time during the day. During my stay from 1200 hrs to 0400 hrs , dormitory was cleaned 3-4 times.
4. You can bring your eatables in the dorm and eat there, no problem.
5. The switches for fans & lights are at entrance of dorm with switches mentioned like L1, F1 (for light &fan for dorm 1), L2, F2, and so on.
6. Cooling is adequate and adequate fans and lightings available. Room includes a bed, a locker, a charging point, and a set of 5 hooks for hanging clothes. Nothing else.
7. Last but not the least, be ready for the attendants (females) to come to ask for tips at the time of checkout. My checkout was early morning, so the came the previous evening itself.