Nicholas is right. If you will own the flat in the future then, don't doubt to buy it. If you are worried about the market. It will always lead you to more doubts. Market flow will never be fix.
It depends how small or large the repairs. Minor repair like damage door knob or minor faucet leaks can only take less than a day. Monthly house visit is necessary to check the house since, some tenants will inform if house need repair. Some tenant doesn't care.
Yes, property is an asset class but in my opinion property is not the best asset class. It is true that property can increase value but only if it is well maintained and location is good. if not, property value can decrease or stagnant.