Can be a bit hit and miss mate, I wouldn't make the journey from say San An for it but if you stay in the area or PDB then it's worth dropping in to see what's happening. First time we discovered it was poss about 2004, we had been in for a drink during the day and then that same night we were walking back from Ibiza town and walked past at about 1am and decided to pop in for a drink, best move ever
. Place was mobbed and going right off, we didn't leave until 7am, got in tow with a few randoms/made new mates for the night, chatted with Janine from Eastenders, was such a good unexpected night.
Other times I've been since then we haven't caught it as busy or going off like it was that first time, we stay in that area so it's always been easy enough to nip in and see what's happening and then head if it's quite. Always worth nipping in once you finished up at one of the big clubs as there can still be a group of 20 or 30 people in there having a right party with themselves, always good if you ain't quite ready to knock it on the head yet. Think they maybe chuck everyone out about 8 or 9, can't really remember, it was definitely very light and sunny though
. It can be closed too though, possibly if they are having a quiet night and decide to finish up for the night.
You generally need to press the buzzer at the wooden door, don't let that put you off though, just say your looking to come in for a drink at the experience bar.