1. Downtown apartment: Downtown apartments are often sought after by young professionals and students, and the rent is high.

2. Real estate near the university campus: Real estate near the university campus usually has a steady stream of tenants, because both students and faculty need to rent houses.

3. short rent around tourist attractions: short rent around popular tourist attractions can usually attract tourists, and the income is relatively high. 3 luxury houses in high-income residential areas: luxury houses in high-income residential areas often get higher rents.