Which is better to invest in hotels, office buildings or factories?

The initial investment of the hotel is large, the payback period is long, the financial pressure is great, there is no good management team and occupancy rate guarantee, and the investment risk is great; The investment in office buildings is also very large. The key is that the return on investment in office buildings is not high, even in first-tier cities, it is only about 5%. I think it's a good choice to invest in a factory. First, there is little pressure on investment funds. Secondly, the rental income is higher than that of hotels and office buildings, at least in Shanghai, but the appreciation of factories is relatively slow, not as good as hotels and office buildings. However, special workshops in factories should be carefully invested, because there are few users of such properties, which is not conducive to renting.