Depends what you want
baga , calangute and anjuna beaches have good market near beach for essentials but old goa has some good and vast collection markets
Here are few for you :- Hostel Zostel in Calangute Backpacker panda in Candolim Little India beach cottages in Baga Sai Palolem beach cottages Nikita Residency in Calangute Anjuna palms guest house near Anjuna beach Morjim sunset guest house is also good to stay in goa for reasonable rates ...
Hey Isha This is Best and cheap shopping Places in Goa 1-Saturday night market 2- Anjuna Flea Market 3- Palolem Market 4- Mackie ' s Night Bazaar Happy Travelling
There are many shops (retail shops as well as small stalls) on the calangute candolim road, where u will find clothes at a cheap price. there is anjuna flea market on wednesday (before sunset) and arpora and mackies markets on saturday evenings (till early morning)