Flash is really popular and they are good at accommodating all the customers. Changing the layout of the salon might help with this so that customers don't have to keep moving at every stage of the treatment. Sometimes the wait times are a bit long, even with an appointment - better scheduling / allowing more time for treatments would help avoid delays.
I booked for a pedicure, however they were 20 mins late. Once I was seen to the pedicure was good value for money. The ladies are good at what they do and the range of nail polishes are decent including OPI. Note they only take cash.