Definitely fantastic hosts ! They travelled a lot so they know how it is to stay at someone's house. They are very friendly and helpful without being intrusive. Everything is clean and that's a real plus ! There's everything you need in the bathroom : bath-gel, toothpaste, towel, better than a hotel ! That flat is really near 2 commercial-centers and you can easy go from there by walk to the other side of the city. Don't worry about wifi : it just works everywhere in the flat, and fast :)
If you want to stay near the city-center, I hardly recommend you this address !