I rented through coastal for 2 years and all i had was problems. Repairs not being done, cowboy workmen who i would catch smoking in my flat, rude staff & empty promises. The whole operation is a complete and utter farce. The staff in the office are air heads who haven't a clue what they are doing, they are rude on the phone and pretend not to be in the office to avoid awkward conversations.
Our ceiling collapsed and we were with out water for 4 days. Because the work was done so badly it then fell through again in to our kitchen and we were without water for a further 4 days. We had no compensation or deductions from our rent.
Coastal management are by far the worst agency i have ever dealt with. If you do decide to rent from them keep all email documentation and records because you will need this to get back your deposit. They are cowboys and if you can avoid them do.