I rented from them for 3 years and was impressed with how fast they responded to the few minor maintenance issues I had. There were never any issues with the management and they answer their emails always almost immediately 7 days a week. I did phone couple of times but always found email the fastest way to get a service booking. Usually the same day I emailed their maintenance department showed up and almost always corrected the problem quickly and painlessly. I would recommend them for any Queen's student or post grad. I was very pleased with their services and cleanliness of my building.
