In Belgium, landlords are free to decide at what price to rent their property. To determine a good rental price, it is best to take into account a number of things:
Surface area
Obviously, you can ask a higher rent for an apartment with more than 1 bedroom and a large living area than for a studio.
State
If the house is in perfect condition, with high quality materials and certain technological gadgets, you will also be able to ask a higher rent. Good insulation is also an important factor.
Location
The rent will also depend on the location of your property. Is it centrally located? In the center of a city? In the countryside? Is the property easily accessible? Is it a trendy neighborhood?
Garden/terrace
If the property has a nice terrace or garden, the price (especially in cities) will be able to be a lot higher.
Garage/parking space
If a garage or parking space is included in the price, it may also be a lot higher.
Furnished
The rent may also be higher if the property is furnished.
Elevator
For example, for an apartment on the 4th floor without an elevator, you can ask a lower rent than an apartment in a building where there is an elevator. This makes it more attractive given the higher location in the building (lots of light, nice view).
Conclusion
The trick is to find a good balance since too high a price will attract few people and too low a price will not yield enough return on your investment.