The flat is clean and modern. The kitchen and bathroom is recently renovated. The location is great with a large grocery store and many good restaurants within walking distance. This place really added to the San Francisco experience. Roy and Annie were great hosts. They made sure we had everything we needed and are very responsive.
Only thing to note is the Muni tram right outside. It's great for transportation, but if you are sensitive to noise, know that you will hear and sometimes feel it passing. Our kids were fine, they slept right through it. It didn't bother me, but my wife had to use the earplugs. Everything worked out wonderfully in the end.