It should be relatively easy to get a taxi along Castle Peak Road, but since the hidden garden is unlikely to be a place that taxi drivers will recognize, name "Sea Crest Villa Phase 4" as your destination.
It should be relatively easy to catch a taxi on this busy road, but because the garden is private and hidden, it is unlikely to be a place that taxi drivers will recognize. Instead of naming Dragon Garden, use "Sea Crest Villa Phase 4" as your destination.