mario is an amazing host! his apartment is beautifully laid out, has fabulous style and is very comfortable. his place is perfect for the san francisco vacation. it is in the dream location of hayes valley (near several cool restaurants, shops, bars and tasty ice cream), but it resides on a calm/quiet one way. mario is very flexible with trip changes and he replies to emails and/or airbnb messages very quickly! he will mail you the keys ahead of time, so you already feel at home walking up ivy street. i would highly recommend staying at mario's during your san francisco stay! sincere thank you, mario! cheers!