Holiday Inn Osaka Namba, an IHG hotelvsRemm Shin Osaka
Both properties are rated highly by those who travel for a living. On balance, Holiday Inn Osaka Namba is the choice of most writers compared to remm Shin Osaka. Holiday Inn Osaka Namba comes in at #18 in Osaka with endorsements from 2 reviews like Michelin Guide, Oyster.
Holiday Inn Osaka Namba, an IHG hotel
 Michelin Guide
5-15 Soemoncho, Chuo-ku, Osaka, Osaka Prefecture 542-0084
From $126/night
- Free Internet
 - Room Service
 - Laundry Service
 - Concierge
 - Laundy Room
 - Restaurant
 
 "Two different interior colour schemes are featured: the grey and white ‘Japanese Modern’ and the red and black ‘Osaka Modern’. All rooms come with...Simmons beds." 
Remm Shin Osaka
 Oyster
 Michelin Guide
1-1-1 Miyahara, Yodogawa-ku, Osaka, Osaka Prefecture 532-0003
From $84/night
- Free Internet
 - Laundry Service
 - Restaurant
 - Smoking Rooms
 - Multilingual
 - Dry Cleaning
 
Upper-middle-range
 "Located above Shin-Osaka station, remm Shin Osaka is a mid-range business hotel with 296 guest rooms, the vast majority of which are Singles." Full review
 "Connected to Shin-Osaka Station and named after REM sleep, this hotel has just single and twin rooms, 14㎡ to 23㎡ in size." 
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The bathrooms have rain showers, but if you want a bathtub choose a twin room.