Here are some potential pros and cons of purchasing real estate in Johnstown, Pennsylvania:

Pros:
- Affordability: Johnstown's real estate market is relatively affordable compared to other cities in Pennsylvania and the United States. This could make it attractive to those looking for a low-cost investment opportunity.
- Rental potential: Johnstown has a high percentage of renters, which could make it an attractive market for real estate investors looking to buy and rent out properties.
- Natural beauty: Johnstown is located in the Allegheny Mountains and has access to hiking and other outdoor recreational activities, which could be appealing to some residents and potential renters.
- Potential for growth: The city has a history of manufacturing, but is now diversifying its economy. There may be opportunities for growth and development in the future.

Cons:
- Economic factors: The city of Johnstown has experienced a decline in population over the years and faces economic challenges. These factors could make it more difficult to secure tenants or sell a property.
- Severe weather: Johnstown is in an area that experiences harsh weather conditions, with heavy snowfall and frequent flooding. This could lead to damage to the property or disruption in daily life.
- Crime: Johnstown has a higher crime rate than the national average. This could make the area less appealing to potential renters or residents, and could potentially affect the value of a property.
- Limited job opportunities: While there is a push towards economic diversification in Johnstown, job opportunities may still be limited in the area. This could impact the financial stability of potential renters or even the property owner themselves.

Ultimately, the decision to purchase real estate in Johnstown, Pennsylvania will depend on your specific goals, financial situation, and risk tolerance. It's important to conduct thorough research and take a close look at the local real estate market before making any investment decisions.