Story highlights The athletes village is to house 11,000 athletes and 6,000 coaches during Rio's Games

Among the amenities: 18,500 beds that can be extended in length for taller athletes

The opening ceremony in Rio is scheduled for August 5

Rio de Janeiro (CNN) With a record number of condoms allocated and air-conditioners in every bedroom, Rio's athletes village starts welcoming Olympians on Sunday.

The new apartment towers built to house 11,000 athletes and 6,000 coaches during Rio's Games are being called basic, even austere.

But when you step out on the balcony of one of the 3,604 apartments, the complex -- with its swimming pools, tennis courts and bike lanes -- looks downright five-star.

"The athletes are going to have everything they could possibly wish for during the Games," said Paul Ramler, founder of RSG events, which has been supplying furniture for athletes' villages since Sydney 2000.

The rooms are furnished with single beds and wardrobes made of recycled materials, as well as air-conditioning units to allay fears over the mosquito-borne Zika virus.

"I've never seen anything like this during all my years at the Games."

Read More