Two of my friends and I stayed in Claire's apartment for two nights while visiting Brussels and loved her apartment--it was clean, very well lit, spacious, and she was a great host! It's about a 10-15 minute walk from Grand Place, and there is a metro station about 2 blocks away, so it was very easy to get around. Rue du Marteau was quiet but felt safe. Claire was close by and a very responsive host. Overall, I would absolutely stay here again if we return, and would definitely recommend to a friend.