If you are looking for a big commercial centre with chain-stores etc., consider Grand Place tramway A direction Echirolles. Generally very crowded, especially at weekends.
For street shopping, stop at Victor Hugo tramway station tramway A or B. The tramway station is next to Place Grenette, which is the center of the city. This area is largely pedestrianized. Small, winding streets house many boutique-style shops, chain-store outlets, traditional French cafés and all the usual city centre paraphernalia.
For pampering, Bella Express on 10 boulevard Agutte Sembat, near Victor Hugo is all in one beauty concept where you'll find haidressers and beauticians for men and women opened non stop for 9am till 9pm: www.bella-express.fr.
If you want a SPA/Hammam, you'll have to get out of the city and head off to the outskirts such as Echirolles or Meylan.
The markets. There are several daily food markets in the city centre. The most centrally located, are at Sainte-Claire Les Halles near the Cathedral which has a covered food hall housing cheese and butchers' stalls as well as the outdoor fruit and vegetable market, and Place aux Herbes. Watch out for the grape-stealing pigeons - a great favorite with children but detested by the stall-holders! The best market is probably L'Estacade 6 days per week, under the elevated railway tracks next to Cours Jean Jaures.
The cinemas, you'll find a few within the city center such as in the pedestrian streets or the multiplex Nef Chavant. If you want to watch an English/American movie with French subtitles head to La Nef on boulevard Edouard Rey, near Victor Hugo.