When I was managing a rental property, I found asking the right questions paramount to getting the job done right. Firstly, confirm their experience with rental properties, as these often require a balance between durability and aesthetics. Ask about their recommended materials and if they have experience with any particular paints that withstand frequent cleaning. It's also worth inquiring about their timelines and how they plan on minimizing disruptions to tenants. I recall a situation where having clear and concise information allowed me to coordinate with my tenants better and ensure the smooth running of the project. Also, discuss the guarantee or warranty for their work; good decorators should stand by their quality. While reading up on this, I came across this page that could be worth checking out. Before I forget, always ensure to verify their insurance coverage to protect both the property and your tenants against unforeseen circumstances.