In this section, “accessible room” means a room in a lodging establishment that is required to be in compliance with the transient lodging requirements of the Americans with Disabilities Act. Subject to subsection (c) of this section, each accessible room in a lodging establishment shall be furnished with a bed that: measures at least 20 inches but not more than 23 inches high from the floor to the top of the mattress, whether or not the mattress is compressed; and has at least a 7–inch vertical clearance under the bed for lift access. Beginning December 31, 2022, each lodging establishment shall furnish at least 25% of the lodging establishment’s accessible rooms with a bed that meets the requirements of subsection (b) of this section. Beginning December 31, 2023, each lodging establishment shall furnish at least 50% of the lodging establishment’s accessible rooms with a bed that meets the requirements of subsection (b) of this section. Beginning December 31, 2024, each lodging establishment shall furnish at least 75% of the lodging establishment’s accessible rooms with a bed that meets the requirements of subsection (b) of this section. Beginning December 31, 2025, each accessible room in a lodging establishment shall be furnished with a bed that meets the requirements of subsection (b) of this section.