Found this place to be nice and clean and inviting.
It does sit in a fairly central location for walking to more touristy beaches, restaurants, shops, and for hopping on the highway to go elsewhere. The building is located on a busy corner and it took me a couple of nights to get used to the road noise, etc. - especially with the unique Jalousie windows. No significant problems with noise in the building though, which is positive!
As a first-time traveler to Hawaii, I quickly learned how difficult and expensive parking can be in Waikiki (and elsewhere at times), so I would make sure to factor that into your trip as well. The garages around charge a day rate and an additional night rate, so at times we were spending about $30-45 a day to park the car a couple blocks away. However, the view from the lanai is gorgeous, so not a bad trade off!
Overall, most of the challenges we experienced were in the actual traveling/car situation, and luckily the stay at Mark's place was the easy part. Would recommend, keeping the previous things in mind!