I stayed at the Daiwa Roynet hotel for a total of 4 nights and I'm glad I did.
This was without a doubt an excellent hotel with larger then normal rooms( Japan Standards) in a great location.
The Hotel is easily accessiable from the Airport and for 2800 YEN you can take the Airport Limosine bus from outside KIX arrivals and getting off at Sheraton Miyako Hotel Osaka. The hotel is a few minutes walk from there, more information is on the below link :
The Hotel also is only a couple of minutes walk from Kintetsu Line's Osaka Uehonmachi Station and about 10 minutes to Sh1tennoji Temple.
The area has many places to eat and various supermarkets if you need to grab something for back at the hotel.
Overall an excellent Hotel and highly recommended for anyone staying Osaka.