Seriously, Kolkata and buses with big backpacks is quite the adventure. I wouldn’t risk it, especially if you’re traveling as a group. The private buses there are pretty chaotic, and their stops are often in random, unpredictable places. So, instead of going crazy trying to find the Howrah to Sonagachi bus number, you’re better off just booking a car with GetTransfer. It was used on my last trip, and a lot of time was saved. The best part is you can hop in a roomy minivan for four people, the price is set, and you won’t get stung by traffic jams. The driver’s gonna meet you right at the exit with a sign, and you can easily arrange a couple of stops at attractions along the way. Hey, can you hook me up with the guesthouse contacts?