I just returned from the Zenith (sister ship to the Horizon) on Saturday. On the Zenith the Cova Cafe is a lounge/bar very similar to the other lounges onboard. It is located on deck 8 and has a grand piano and combines a regular bar with a coffee bar. I'm guessing from your questions that maybe the Cova Cafe is something completely different on the Horizon? Would be interesting to know! Happy cruising!
RCCL's Majesty of the Seas * Eastern Carribbean - '93
Celebrity's Horizon * Bermuda - '95
Celebrity's Zenith * Bermuda - '98
Celebrity's Horizon * Bermuda '99
Celebrity's Century * Western Carribbean '01
Celebrity's Zenith *Bermuda - '04
There is a charge for the coffee but not for the pasteries. Pastries are available in the morning and in the afternoon. All Celebrity ships have a cova cafe. On some ships the cova cafe becomes the wine bar in the evenings as well as serving coffees.