Furniture Rental isn't really done much in Costa Rica. Here are a couple resources we've found so far (do you know of any? Please share if/when you find it!!).
(http://MudanzasMundiales.com/relocation/relocation_furniture_rental.htm / 2-219-8943 / 2-219-7853 / lrodriguez@MudanzasMundiales.com)
The "Emergency Kit" is a special package that includes all items necessary at home, such as furniture, appliances, bed linens, towels and all household goods for a family of 4 or more. It includes transportation, packing/ unpacking and counselor assistance. Instead of having to stay at a hotel, expats can move into their new home totally furnished while they wait for their own items to clear customs. This will cut such costs as staying at a hotel, leasing contract penalties, etc. The ideal solution for companies as well as for their employees and their families. contact Lorena.
(http://cort.com/global/furniture-rental/costa-rica / 1-866-425-2678 / 1-408-318-6133-U.S.)
Furnishings are delivered in a hotel-style service, including dressed beds, towels on racks and kitchenware in place. You will feel at home the moment you walk into your new Costa Rican furnished apartment.
Relocating? Looking for a place? Home not ready? Need a REALLY centrally located (in Escazu) PLACE TO STAY till you find something? Contact me at the locations below and I can Connect you as I know many of the properties in this area.
LivingLifeInCostaRica@gmail.com / 1-941-312-7569-from U.S. / 8-378-6679-within CR)