Condos are great for short term rentals because they offer the convenience and amenities of a hotel, often in desirable locations. This can be much mores profitable for investors due to high demand and potential for higher rental income.

Multi unit buildings, specifically 2-4 units, can be great for short-term rentals because they offer more flexibility than larger buildings, often with lower purchase prices. 

This can lead to higher cash flow and profitability for investors due to the potential for consistent rental income. Additionally, investors can live in one unit and rent out the others, further maximizing returns.

Investing in large apartment buildings can be highly profitable for real estate investors, especially in the Chicago area where there are many investment opportunities due to the city's growing population and strong demand for rental housing.

Investing in rental homes can be a lucrative opportunity for real estate investors in Chicago. The city's strong demand for housing, coupled with rising property values and a potential for steady rental income, make it an attractive market for investors. With a diverse range of properties available, there are ample opportunities to find the right investment for your portfolio.