In my first room, sink hot water didn't work; shower was fine. I changed rooms. Everything worked there, but the toilet flushing handle had to be jiggled around to flush properly. Overall, it seemed to me that the plumbing in all rooms, while functional, needs more maintenance and, perhaps, new fittings.
The Mammoth Lakes building, while structurally sound, really needs some new paint and, on the walkways, some rust remediation. Parking areas are okay, but some areas need resurfacing.