We spent two nights at Jam's and had a very pleasant stay. The flat was good for such a short stay, but although it has a few kitchen appliances (microwave, dishes, fridge), there is no kitchen sink in the flat (nor dish soap) which is quite inconvenient when it comes to doing the dishes!
The neighbourhood is quiet and offers great access to the European quarter and many bars and restaurants. The city centre is about a 40 mins walk.