In Canada you can typically prepay whenever you wish and, provided you do not exceed the annual "prepayment limit" under the conditions of the note, you will suffer no penalty.

You may end up needing to go through the whole foreclosure process which can take a lot of time and cost a lot of money, and you may end up getting the property back in much worse condition than when you sold it, potentially with a squatter in it and months of lost rent, and in a worst case scenario you will be in a much worse position than if you had just sold it outright. 

For example a price below where I think it will sell for, attracting more Buyers, but not too low where I'm doing unnecessary work filtering out Buyers who don't understand the market conditions.

The demographics and map data don't take the students into account, but they're really what's driving the market.Low property values and ever-increasing student rents are a recipe for a market when you can pick up a duplex in decent condition for $150k, and rent it for $500/bed (that's an EGI of $36,000 annually for a 3/3 duplex).

I’ve noticed quite a few price drops in SFH in these areas in the past few weeks due to shifting market conditions.

Local market economic conditions. 

In Europe, it is indeed possible to withdraw equity from a property through refinancing, but the conditions vary by country and lender.

As for other ongoing expenses that will really vary by property age and condition.

Do you understand what conditions caused the issue?

This is because value-add properties, especially those built in the 1960s to 1980s, typically take a couple of years to stabilize, particularly in today’s market conditions.