Mattress King

 is a limited-time premium building that was released on November 14, 2018, as part of the Thanksgiving 2018 Event. Upon completion, Marv is unlocked.

Regular
Marv
 * Record a Commercial With Moe - 4h
 * Give Online Mattress Stores Bad Reviews - 12h
 * Aggressively Advertise - 24h

Quest Based
Marv
 * Go Online for the First Time Ever - 60m
 * Sell Mattresses - 4h

Trivia

 * Only one can be obtained.
 * It can be placed on grass, pavement, dirt, boardwalk, pier, edge of boardwalk, or edge of pier.