1. Not all service providers have a steady network in Goa. Especially Airtel! (I gave up on that)
2. Even if you compensate for a Hostel having a decent WIFI, how do you stop the 'Pawri' gang? Imagine being on a team meeting, and a raucous song gets played in the backdrop! (I have been in that situation. Even more horrifying, it was my joining day in the firm)
3. Are you considering renting an apartment? Oops, sorry to burst your bubble; it will burn your pocket.
For several similar reasons, a Coworking space is a savior.