 The IOC Evaluation Commission arrived in Rio de Janeiro on April 27 , 2009 , to assess the quality of the bid , stating that the welcoming activities prepared by the city had been the best . Unlike the first evaluation , the committee did not assign scores , but analyzed the probability of execution of the plans . During the first two days of the visit , the Evaluation Commission held internal meetings at Copacabana Palace , the host hotel . Between April 29 and 30 , the Commission attended technical presentations in a large ballroom equipped with lighting and multi @-@ media resources , where it participated in question @-@ and @-@ answer sessions about each of the seventeen themes presented in the Candidature File . May Day was marked by the <unk> ' visits to all existing venues across the city . On May 2 , 2009 , the Evaluation Commission made a press conference to highlight the main points of the visit . According to El Moutawakel , the Commission was very impressed with the unity of government support , the quality of the presentations and the level of integration of the Games in the country 's long @-@ term development plan . After seven days of inspections involving 300 professionals , the thirteen members of the IOC Evaluation Commission left Rio de Janeiro on May 3 , 2009 , on the way to Madrid . One month before the election , on September 2 , 2009 , Rio officials welcomed the released of the 2016 Evaluation Commission Report . It gave a very positive assessment to the city and described the documents submitted by Rio de Janeiro as " of a very high quality " . 
