As you can see, it has two cabins, and can comfortably sleep 6 adults. Head height in the boat is good, at over 6' 2" (my height).
All the information you can want can be found here on sailboatdata.com: Clipper 311
Here is a very pretty brochure for the 311. I do not read French very well, but can clearly see that this is from a charter company. The 311 is a popular charter boat due to its ease of handling and comfortable interior.