Boutique Hotel BudapestvsK+K Hotel Opera
Both properties are rated highly by reviewers writing for major publications. On balance, K+K Hotel Opera ranks significantly higher than Boutique Hotel Budapest. K+K Hotel Opera comes in at 76 with recommendations from 7 publications like Rough Guide, Michelin Guide and DK Eyewitness.
Boutique Hotel Budapest
 Michelin Guide
 Lonely Planet
 Rough Guide
 Oyster
So utca 6, Budapest H-1056, Hungary
From $48/night
- Pet Friendly
 - Bar/Lounge
 - Free Internet
 - Room Service
 - Free Breakfast
 - Laundry Service
 
 "Purpose-built hotel hidden away in a bohemian area adjacent to the river and the main shopping street." 
 "This boutique hotel with 74 smallish but recently renovated rooms on seven floors is cobbled together from two buildings linked by an open-air corridor." Full review
 i 
Make sure you ask for a room facing Só utca (eg No 37) as half of the rooms look down onto an uninspiring courtyard.
 "Although by no means large, the rooms are impressive, with smart, dark furniture set against hardwood flooring and light, design-papered walls." 
Upscale
 "Offers budget-conscious guests a modern stay... and underground parking." Full review
K+K Hotel Opera
 Michelin Guide
 Fodor's
 Lonely Planet
 DK Eyewitness
 Rough Guide
 Star Service
 Oyster
 Frommer's
Revay utca 24, Budapest 1065, Hungary
From $71/night
- Pet Friendly
 - Bar/Lounge
 - Free Internet
 - Room Service
 - Laundry Service
 - Concierge
 
 "Friendly hotel, handily situated next door to the Opera House and near the smart shops of Andrassy utca." 
 "Location, location, location: the K K Hotel Opera has it all." 
 "This upbeat Austrian-owned place just behind the Hungarian State Opera House has 206 rooms spread over seven floors." Full review
 "Behind a splendid façade it offers guests comfortable accommodation in modern, clean and incredibly spacious rooms." 
 "Opulent, and very expensive, four-star hotel that really trades on its location right by the Opera House." 
 "This is a smart business hotel with a formidable, trained staff, an epicenter location near the main opera house and enough charm to please individuals, couples and families here to see the Castle." Full review
 i 
Staff is friendly and efficient, even when inundated with questions and requests from guests.
Upper-middle-range
 "This upbeatmid-range, modern hotel is centrally located next to the Hungarian State Opera, and looks impressive." Full review
 i 
All 206 rooms are cheerful and come with air-conditioning and minibars
 "It has the usual business amenities, including a well-equipped business lounge...equally appealing for the individual traveler looking for a centrally located room, great service, and good prices." Full review