The area is slightly quieter than Jumeirah 2, or neighbouring Safa and is largely residential in nature. Most accommodation consists of Arabic style double story villas, but there are single story villas (some in compounds) to be found in the area too. Apartments are few and far between.
The area is well served for supermarkets with a large Choitrams on Al Wasl road, and 5 minutes further up the road there's a large Spinneys in its own complex.
The area around Al Safa Park also now contains a number of cafes and casual restaurants, and via Al Wasl and Jumeirah Beach Road the area is pretty connected. You can also now walk to the Dubai Canal, and cycle paths are beginning to sprout across the area.
Restaurants and cafes can be found along the beach, and Beach Road (with Barracuda a favourite in the area). There's also a new shopping Mall - Sunset Mall, but despite the shiny steel and modern glass, it's fairly sleepy. For most of the hours of the day this is a quiet residential area, however during school hours some of the quietest roads become hazardous as parents appear from the unlikeliest places.
There are quite a few nurseries in the area, although schools tend to be in neighboring areas such as Al Safa (a few minutes drive away).
Unlike Jumeirah 1 and partly 2, there has been less demolition of older villas, so it feels older and more established - and less shiny. Cars outside villas are less likely to be super cars, and more likely to be older family 4 by 4s.
Jumeirah 3 is a nice place to live for families. It is more down to earth than Jumeirah 1 and 2, and some of those single story villas in compounds can be reasonable in rent (130,000 plus for a three bedroom). It has been hit by recent construction in the area, but that is very (very) slowly beginning to come to an end.