The Tenant must maintain the Property in good condition and repair on a day-to-day basis and send a written notification to the Landlord should any problems arise. The Landlord is responsible for ensuring the Property is in habitable condition and fixing habit defects. If the Tenant's negligence, fault, or guests cause the problem or damage, the Landlord may require the Tenant to bear the costs of fixing it.
The Landlord must repair mechanical damages, like plumbing, HVAC breakages, etc. However, the Tenant might be required to pay fees or have them deducted if HVAC breakages occur due to excessively dirty filters or other negligence problems. The Tenant may not modify the Property, such as painting it, nails in the walls, or other modifications that might affect it.