A gravel garden is a great option for a low maintenance garden. It also lends itself to Mediterranean-style drought-tolerant planting so things like lavender, euphorbias, Cistus, Santolina and Phlomis are ideal and provide plenty of nectar and pollen for visiting insects.
Any area is suitable for a gravel garden, although a sunny, well-drained spot is best for most Mediterranean plants.
While it is possible to make a gravel garden on any soil type, a predominantly sandy or gravelly soil naturally lends itself to this type of style.
Small plants can become swamped by gravel. Plant them on a low mound so that that they are raised slightly above the level of the gravel.
Where landscape fabric is not used, weeds and self-seeding plants may become problematic, popping up where not wanted. However, allowing self-seeding can give the garden a more natural look even if some weeding is required.
If your soil type is heavy, clay-based, damp, or has a high water table, then gravel garden plants may not thrive. You may be better off going for a different style of garden and selecting planting to suit the conditions.