"My 4 (almost 5) year old daughter absolutely loves this set. She built it by herself over 2 days with some mommy help. She picked it out by herself and said it was the only one she wanted when offered other Lego set options. She loved building it, yet spent a great deal of time also playing with it and loves the fact it comes with 2 kitty cats. It has the playability to Imagine being a vet with a fully stocked ambulance or pretending to have rescue missions in the gear whirl pool with the basket from the tree house."