I had a great 4-day stay here. The biggest plus was Konstantia, who is extremely professional and also very kind and friendly. I left my phone on the taxi coming to check in and she helped patiently until we got it back. The bed is outstanding and all the furniture and equipment is new and top quality. Location is great and interesting.
A few things to note: This is a basement apartment accessed by a short, spiral metal staircase. As well as the entrance door, there is a locked connecting door to a private home. The door can be unlocked by the hosts (eg for cleaning) but there is no key on the guest's side. I had total confidence in the host but in principle I think this is undesirable. Generally the place feels more like a furnished suite or aparthotel than a full-fledged apartment. Also note there are no basic foodstuffs at all for cooking, so while the kitchen is great it's less practical for a short visit.
Recommended despite these points.