Mark and Nobu's place is in an excellent location within walking distance to the heart of Waikiki. While the building is definitely older and the hallways aren't the cleanest, the room itself was very well renovated and looked better than the photos. The AC worked well and the amenities were up to par. One thing to note is that the building is near a high traffic road, so it may be a little noisy to some at night - I suggest bringing earplugs. Mark and Nobu are excellent hosts and clearly very experienced. They were responsive and accommodating to our concerns and requests.