How do I know what accommodation buildings are near enough to a business for guests to use it?

Tap a business to select it and look at the green outline that appears. Accommodation buildings within the green outline are near enough for guests to use it (but the business still needs to be connected to a path, have enough stock, be high enough quality and low enough in price). Accommodation that is near enough to the business will be tinted green. Accommodation that is too far away will have a red outline.

 Any accommodation within the green area around the Juice Bar is near enough to the Juice Bar to use it. The two Eco-Friendly Tents in green are near enough to the Juice Bar for the guests to use it but the two Eco-Friendly Tents with the red outline and the Pretty Caravan with the red outline are too far away.

Any accommodation within the green area around the Juice Bar is near enough to the Juice Bar to use it. The two Eco-Friendly Tents in green are near enough to the Juice Bar for the guests to use it but the two Eco-Friendly Tents with the red outline and the Pretty Caravan with the red outline are too far away.