I booked this place for my friend's bachelor party...it was darn near perfect. Jo was very accommodating with our specific check in/out requests and quick to reply. The location really is in the heart of Gaslamp, so if you're looking for peace and quiet come night time--good luck.
But for the beer-drinking and exploring groups who will be intoxicated/exhausted by day's end, the noise did not matter and the mattresses were comfortable enough. The only minor gripe we had was that the WiFi was not great...a small price to pay for the convenience of everything else. Would book again!