I was welcomed by Frank, and he was very kind and professional. The apartment has everything you need and seems to have been refurbished not long ago. It's centrally located (supermarkets and bars and restaurants around) and you can walk to the most tourist spots.
However, there are a few things you should know:
1. The walls in this house are thin and you hear your neighbours more than you want to, even when they are normal talking or watching TV. Don't forget to bring earplugs.
2. The bed in this room is VERY noisy. I guess the people in the other apartments heard me turning around, too. Again: Earplugs help, but it's still inconvenient.
3. It's a lively neighbourhood, mixed up with families, playing kids and drug dealers. I felt safe even when coming back during the night but you should be aware of it. There is a small square with a playground near the house and if you want to take a nap in the afternoon to be fit for the evening / night, you will have to close the window and maybe (once again) need earplugs. It gets quieter in the later evening / night.
Everything else was fine.