I booked this appartment (Gerard Doustraat street) through booking.com. for 1300 EUR as a solo traveller (130 EUR per night). My first impression was not possitive as the appartment was dirty, the bathrom was smelly and the furniture looked like saved from the garbage but I decided to stay and focus on work ignoring the unpleasant ambience. It turned out to be the worst decision ever. The appartment was frequently visited by mice, the owner or his employees visited the place every day ignoring the wish for privacy and finally - I got bitten by bed bugs what caused a very strong allergy. Booking.com was not feeling responsible for this issue (they think they are intermediaries only and can't do anything) and the owner simply declined to have mice and bed bugs - according to him it could be a food alergy (that bites?), washing powder's allergy, bees (bitting 15 times?) or mosquitos. So I should better catch the mice and the bed bugs and bring them as proof.
So my hint is - if you have a big enemy and you want him to get attacked by bed bugs - book this appartment for him/her through booking.com!