Mamaison Riverside Hotel (MRH) turned out to be my "mystery" 4.5-star hotel on Expedia, and I was looking forward to my stay after reading the mostly positive TA reviews -- and glad that I'd gotten a good price ($390 for 3 nights, including taxes and fees).
Overall, I had a good stay at MRH, starting with my e-mail to the hotel early last week requesting a hotel-car pickup from the airport. The reply was prompt, and the quoted fare (780 kr) wasn't that much more than what I'd read a taxi would cost. My driver was waiting for me at Prague Airport arrival, and the car was a nearly new and very comfortable Mercedes sedan. The drive into Prague took about 30 minutes, and the driver, who spoke very good English, provided interesting and useful information about the city.
MRH was indeed just opposite the river, at the western end of one of Prague's main bridges, and about a 20- to 25-minute walk to the eastern end of Charles Bridge. The hotel itself is housed in lovely older building (as one sees in much of Prague), with an appealing modern interior decor that nonetheless echoes some of the hotel's original design features: lots of reds, golds, and crystalline lighting fixtures. The receptionist gave a key for a room (702) on the top floor; as I'd anticipated, it wasn't a river-view room, but I didn't expect one given the Expedia/Hotwire price.
The room was quite large, with two twin beds, a newish LCD TV, and plenty of room for storage, work, etc. The decor was all modern and nicely done: again, various reds and several wood tones, including wooden flooring. The bathroom was also large and well equipped, with slate floors and walls, and a large tub and separate shower (sharing a swinging, snugly seated door with the toilet area).
The room only had two small windows -- skylights, actually -- which opened and closed via electric up-and-down switches. Effective pull-down blackout shades kept out light in the morning. While the skylights were too small and high to afford any real view, I could glimpse a bit of the river and skyline if I stood on a chair: in any event, not important, and a river-view room (which wasn't available at any rate; MRH was fully booked for my stay) would have cost much more.
The room featured a minibar (which I didn't use) and basic (instant-) coffee and tea service (which I did). Housekeeping didn't replace the coffee, creamer, or sugar after the first day; I had to call reception both subsequent days for refills. Again, not a major problem, but indicative of the (not very good) service I'd encounter throughout Prague during my stay. Housekeeping also had an odd sense of what and what not to replenish: after the first day, they provided a complete new set of bath amenities (shampoo, conditioner, body gel, hand lotion) but no new soap. (And the provided soap bar was tiny -- nonetheless, I made do with it and the plentiful toiletries.) Also, housekeeping decided I didn't need a bathmat after my second day.
I didn't eat at the hotel -- breakfast would have cost 15 euros -- as Prague is filled with good cafes, bakeries, and restaurants; and I was full each morning from my two cups of instant coffee.:D
I tried the receptionist twice for restaurant reservations: Kampa Park (see my separate view), for which I got a Sunday-night reservation; and the terrace restaurant at the popular U Prince Hotel on the Old Town Square (which I didn't get; fully booked). I found the receptionists to be polite if not overly helpful.
All in all, I enjoyed my stay at MRH, and I'd probably return, especially with a good Expedia/Hotwire rate. Based on my experience, though, I'd say it's a 4-star hotel; I didn't see what merited the extra half-star.
Ask for a river-view room; otherwise, 7th-floor (top-floor) rooms are quiet.
See more room tips
This review is the subjective opinion of a TripAdvisor member and not of TripAdvisor LLC.