RockyPop was a delightful hotel to stay at...the rooms are comfy and cheerfully decorated, the ground floor has a restaurant, bar, and courtyard for you to relax in. It's in a good walkable location in Grenoble...five minutes from the centre ville, a couple minutes from a bus and tram stop.
My only complaint is that the bathroom seems a little off proportionally. The shower was great -- spacious and with great water pressure, but the toilet was only about 4 cm from the sink vanity...you basically have to plaster yourself against the sink to use the bathroom.