The Gardens
There are a few small cottages around the section of the property that has a sprawling and beautiful garden. The Mewtwos that live here appreciate nature and tend to the gardens, or are willing to learn how to properly care for plants. They also prefer and enjoy the more serene and quiet nature of things in this area, whether it's just for peace of mind or they may have sensory issues and get anxious or panic with louder noises. Very rarely will the other more rowdy Mewtwos get so loud that the sound reaches this area - and even the more rowdy Mewtwos try not to get too close to this area or get so loud and rambunctious that the ones who prefer more peace and quiet can hear them.
Chrono and/or Myles are quick to step in if things get too out of hand.