Stayed here last week for 4 nights. Location is not really great for tourists visiting KL, but as I had to be at the Thai Embassy a couple of times, the location was convenient for me.
Three times per day (free) shuttle service from One Stop to Bukit Bintang and KLCC.
Standard Rooms are spacious and clean, but NO wifi in the room. I booked via Agoda and they mentioned on their website that the rooms have wifi, but according to the front desk this is not the case for the Standard Rooms.
Surroundings of the hotel are boring, there is a 7-Eleven nearby and a few restaurants.
But as the price is okay, I would consider staying here again.

We stayed here for a month and would be happy to return.
The rates are very reasonable.
We had a large apartment with study, bedroom, kitchen, living room.
Nice pool, fast internet, big tv, cleaning and fresh towels whenever we wanted.
Customer service was excellent. They were always cheery and helped with whatever we needed.
The location is not a great one for walking around. There are some small shops, restaurants, and convenience stores though. Taxi to the center is cheap and takes 10 to 20 minutes.
The hotel has a covered walkway to the nearby LRT (light rail) station. And from there you can get wherever you need to go.quickly and cheaply.

- First upon check in, staff don't even bother to read given service voucher. Booked a total of 4 units but staff said one unit.

- Upon entering room, bed was not properly made up. Looks like someone just sat on the bed.

- Basic toiletries not provided. Only cheap bath gel and shampoo in wall mounted dispenser. Bath gel got funny smell.

- Upon check out, we had to wait quite some time as a couple was complaining about complimentry parking ticket. There was only one Filipino staff manning the reception. Then to our surprise, we were asked to pay for broken shower head. Which was not even broken. When told staff that we shall include this issue in our review, he challenged us to "go on and do so". After awhile, staff suddenly said no need to pay but still sound rude. Very bad customer service.

However,

- Apartment was clean.

- Ample parking space on site.

- Easy excess to highway.

- Many convenience store opposite apartment.