The Royal Hotel CardiffvsThe Riverhouse
Both hotels are recommended by professional travelers. Overall, The Royal Hotel ranks slightly higher than The River House. The Royal Hotel comes in at #5 in Cardiff with approval from 3 reviews such as Oyster, The Telegraph and Lonely Planet.
The Royal Hotel Cardiff
 Lonely Planet
 The Telegraph
 Oyster
 Independent
 Independent
88 St Mary Street, Cardiff CF10 1DW, Wales
From $82/night
- Bar/Lounge
 - Free Internet
 - Room Service
 - Free Breakfast
 - Laundry Service
 - Restaurant
 
 "Egyptian cotton sheets, goose-down pillows and fluffy bath robes contribute to a high pamper factor at this central boutique hotel... Just across the street from the train station." 
7.0
 "The 19th-century Royal Hotel is Cardiff’s oldest hotel, close to all the city’s essentials and providing a comfortable night’s rest after urban exploring." Full review
Budget
 "Plush beds, renovated bathrooms, and triple-glazed windows keep all 60 rooms comfortable and generally quiet. " Full review
 "Rest your head at Cardiff’s oldest hotel. The Royal is a Grade II-listed hotel, which shows slight signs of wear and tear, but is still an attractive central stay with heaps of charm. " 
 "The ultra-central location means you’re close to Cardiff’s hottest bars...rooms are fresh, contemporary and a steal, given the modest price tag." 
The Riverhouse
 Rough Guide
 Lonely Planet
59 Fitzhammon Embankment, Cardiff CF11 6AN, Wales
From $43/night
- Free Internet
 - Free Breakfast
 - Laundry Service
 - Laundy Room
 - Breakfast included
 - Breakfast buffet
 
 "Cosy, contemporary backpackers’ hostel set in a Victorian villa with mixed and female-only dorms and twin rooms, as well as a self-catering kitchen, lovely dining/ lounge area and a sunny terrace." 
Top choice
 "The River House has a well-equipped kitchen, small garden and cosy TV lounge. The private rooms are basically small dorm rooms and share the same bathrooms." Full review