This is a large, flat motel parking lot with a main office and motel rooms. The stairwells and rooms, and the roof of the office, are also accessible. The entire motel area is fenced in, and the billboard sign behind the office cannot be climbed. The radio to begin the Survival match is on the military vehicle in the middle of the parking lot.
The swimming pool (1) is a popular place to try and defend, but only if you watch the gaps in the walls and don’t get swarmed in the deep end. The parking lot (2) allows you to strafe around most Special Infected, but you’re also terribly exposed and easily targeted.
The office (3) enables you to hole up and blast through windows, but you have limited escape options. You can try grouping together near an exterior fence so enemies mainly attack you from the front.
The same plan can also be used if you decide to use the upstairs balconies, although there is difficult to avoid Charger and Spitter attacks. Lurking near the buses is unsafe, as you lack maneuverability and foes can easily ambush you.