The Apartment is at a good location, really close to the freeway without the freeway sounds and next door to a big supermarket. The apartment is just as described in the advertisement. You can hear footsteps from the apartment above at night and sometimes dogs barking when their owners take them out for walks in the early morning. Otherwise if you are a medium to heavy sleeper it should be fine.
As for response of staff, if you have no issues with the apartment and just questions they respond to you relatively quickly at most within 24 hours. If you need something fixed, it might take a while, since they are a big company and there is a delay in inter-department communication.