From my personal experience living in a humid environment similar to NYC, I found that preventing mold under a mattress is crucial, especially when you don't have a proper bed frame like the Floyd bed frame mentioned. One simple but effective method is to ensure the mattress is elevated off the floor. Moisture can easily accumulate underneath when placed directly on the ground, creating the perfect conditions for mold growth. To tackle this, I used simple bed risers or even a temporary slatted platform that allows air to circulate beneath the mattress. This airflow helps reduce humidity levels and prevents mold spores from settling. Additionally, I regularly rotate and air out my mattress by standing it on its side for a few hours every couple of weeks. Another tip is to maintain low indoor humidity by using a dehumidifier or air conditioning, which also helps keep mold at bay. If you're on the lookout for a Floyd bed frame in NYC, many sellers offer delivery services, which can make replacing or upgrading your sleeping setup much easier. In conclusion, keeping your mattress off the floor and ensuring good ventilation are key steps in mold prevention without investing immediately in a bed frame. These simple, cost-effective solutions can help create a healthier sleeping environment until you find the perfect bed frame solution.