Pros:
Excellent location, nice and safe neighborhood, close to supermarkets, restaurants, very well-connected to the city center. One room with a small table and open kitchen, big bathroom, perfect for one-two persons. Tea, coffee and kitchen appliances. Not luxurious, but the entire place is spotless. Good value for money compared to the high prices of hotels in Brussels. Easy and clear check-in instructions. Parking is a plus.
Cons:
Stairs. The studio is located in a big building on the 2nd floor with no elevator, but the house actually has two sets of switchback stairs plus an entrance staircase. There're a few additional steps to access the bathroom from the room (not visible in the photos). Not at all for elder people or people with mobility issues. Maybe something worth adding in the description.