I suggest you pick a room that has the least temperature change. With me that is either a spare bed room on the east side or a bonus room on the west side, depending on time of year. The big consideration is that the thermostats on most incubators cannot keep up with big temperature swings. They need a fairly steady location. They also do not shed heat very well. If they get too warm, it can take them a long time to cool off, even if the thermostat turns the heater off.
It is not just the sun shining directly on the incubator, though that is a huge no-no. It is how fast the whole room heats up or cools off. one of those sunny rooms may work fine, especially if you leave the curtains closed.
Anothe consideration. You need to avoid them being where outside air can come in and change the room temperature quickly. I initially tried setting mine up in the garage, but when I opened the outside door, it cooled off too quickly and took a while to warm back up. That was fairly early spring. It certainly shed heat quickly then.