I wouldn't give any star rating. Do not touch Chase de Vani or whatever name they try and hide behind (Housing Enterprise Solutions/Assured Rent Ltd) with a barge pole.
They are the most unprofessional, incompetent, unpleasant, horrendous company I've had the misfortune of having to deal with. Unsurprisingly they lost a major contract with a large landlord who also refuse to deal with them any further. They gave me years of aggravation. Many tenants I spoke to also found them dodgy and clearly underhand, using bullying and threatening tactics.
They exploit the most vulnerable members of society.
Steer well clear. Researching online they have many other bad reviews.
Reason of review: Poor customer service.