For the first condition, that depends if you're able to get residental fiber service there. Most cities have fiber service in the downtown core but that's not a

For the first condition, that depends if you're able to get residental fiber service there. Most cities have fiber service in the downtown core but that's not always true in the suburbs. For the second condition I think that those cloud gaming services publish their available server locations or provide some sort of speed/ping test service to test your connection. Being so dependent on latency it would make sense for them to have this available to their potential customers. You can also check for IX peering info and the like but there's no guarantee that having a presence there means your game server is located there (e.g. Google may have a datacenter in the city and peer with your ISP but the Stadia servers may be somewhere else).