Booked this hotel on Venere.com following good reviews, and we didn't regret. The room was spacious, clean, comfortable and nice spacious bathroom. Location is brilliant, right next to town and close to the castle, also near all the embassies. Breakfast included was ok too without being amazing. And you get free Wifi at reception (for the geeks). The people are reception were not the most smiling people but they did their job properly so can't complain.
Would definitely recommend it if you plan a nice romantic week end.
Oh an restaurant wise, we visited Chez Marcel following reviews, personnally I wouldn't recommend it unless you're after a french atmosphere in a czeck town (and the meals were nothing amazing for a good french price).... try Olympia instead near the bridge next to Charles's bridge...its listed on the michelin guide, the food is simply tasty and affordable in a fantastic place...cant go wrong there! (and cheap beer too ;-)

Excelent Old house with new interior design. Rooms and bathrooms very large! good breackfast . The distric is for to dream. embassys district, very close to castle. Internet free in lobbie.

We couldn't have been happier with Constans Hotel. Being located so centrally in the old town, in a nice quiet street, it was great to stroll out of the hotel to great restaurants, the castle, and other fantastic sights so close by. Our room at Constans was huge, with a big bathroom (shower & bath), which were very clean & well presented. The bath & shower products supplied by the hotel were very nice also. The staff were friendly and more than happy to help with anything we wanted to know about Prague. The breakfast was lovely. We will definitely be returning to Prague, and would only stay at Constans Hotel, which contributed to making our time in Prague so very special.

Stayed in the Constans for a couple of nights on a business trip to Prague. It is well situated, reasonably close to the castle and within easy walking distance of the Charles Bridge and all the tourist sights.

My room was in the newer part of the hotel and lacked the character of rooms in the original building. It was quite well furnished, with heavy, Austro-Hungarian Empire style fittings and a large balcony overlooking an internal courtyard. It was very quiet, but rather warm. The bathroom was massive, with both a bath and a separate shower. There was also a bidet and a very large heated towel rail.

The reception area was limited, consisting of a bar area; this was very dark and not particularly comfortable. Breakfast was poor to average.

I can’t really recommend the Constans with much enthusiasm. It was inoffensive but lacked personality. It was perfectly fine for a business trip, but if you are in this beautiful city for a leisure break, look elsewhere.