Miami beach library at 227 22nd Street is basically a free coworking space with ocean views. Multiple floors have massive windows, fast wifi, plenty of power outlets.

Open Monday-Thursday 9:30am-8pm, Saturday 9:30am-6pm, closed Sunday. No one cares if you camp out all day with your laptop. Coffee available, clean bathrooms. Way better than paying $8 for cafe wifi that cuts out constantly.