Casa di K is in a great location, very close to many sights. The apartment was very clean and quiet and Klaus and Stefano made some great suggestions for sights and restaurants. The space was more than big enough for two and could comfortably accommodate 4 (with one shared bath). Everything worked well, though we blew a fuse by running the washer and the A/C simultaneously (though we had been warned...). The hosts are multilingual and very responsive and accommodating.