This is a great value, the apartment itself is nice, and the owners are very responsive. I would do it again. However, one main and one minor thing to keep in mind:
--The apartment IS off the beaten track. If you are planning on walking everywhere, I will say that it is possible, but it can get old very fast, walking 10-15 minutes or more every time you go out. Also, there are other comments out there about the neighborhood not being great. While I agree that it is a bit more downscale than other areas, I never felt unsafe. *Note: I stayed with my wife, so there was always two of us. I can totally understand that one person alone at night might be troubled.
--Shower gets plenty hot enough, but water pressure isn't great (not a problem, just a small irritation).