Recently my elderly father-in-law who lives in Spain was rushed to hospital. My wife immediately booked a flight out from London to go and see him the next day and she booked a hotel in Torrevieja for 4 nights using Venere.com. They sent an email saying that the reservation was confirmed. After a difficult journey, she arrived at the hotel in the evening only to be told that they had no knowledge of any reservation and that the hotel was completely full!
Fortunately the hotel was very helpful and managed to find another hotel not very far away that did have a room available and after a time the problem was solved (although it did entail a long walk with a suitcase). However it was a very stressful time for my wife.
When I found out what had happened I wrote to Venere for their comments but they ignored my email completely.
My recommendation is that if you want to be sure that there is a room waiting for you when you believe that you have a confirmed booking - do not use Venere as a booking agency.