I am searching for a rental car in Geneva but I do not see any results.
I can see you choose a NON airport pick up location but out of office hours. In city locations you should choose pick up and drop off hours within office hours. This search will direct you to the Airport....just in case you didn't notice
Ye, I would like to pick up at the City Centre near Rue Monthoux.
Based on your search criteria the nearest pick up is at Geneva Airport. When you click on the little <a href="https://v2uploads.zopim.io/4/O/U/4OUR3Pm9veURcpuPQf5b0xlskLAgHhdX/45218ba11aeba13f2de0c564596694f9f77e647f.png" target="_blank" rel="noopener noreferrer">MAP</a> you see the distance to the nearest pick up location.
When you choose for example 4PM pick up and 4PM drop off you can pick up the vehicle right at your desired location. Click on the little <a href="https://v2uploads.zopim.io/4/O/U/4OUR3Pm9veURcpuPQf5b0xlskLAgHhdX/13d1ceb51d86dc3b44322a6e9e397edb28a0ba72.png" target="_blank" rel="noopener noreferrer">MAP</a> again to see.
OK, well I am flexible so I might follow your advise.
OK, if not, then pick up at Geneva Airport Switzerland is the only possibility.