Our guest room is what used to be, for the previous owners, the master bedroom. It has a king-size bed with a good pocket-sprung mattress, and a fantastic en suite bathroom -- great for guests because they don't have to wander the hallways and can perform their ablutions in private before emerging from their room. However, it also has two walls of built-in wardrobes, so I use it as my dressing room. The thing is that I like having people come and stay for one or two nights, in which case I get out what clothes I think I will need for the duration of their stay. But I wouldn't want anyone coming and settling in, so I am happy that they would feel like they were in my way after that, and that I needed to use the room. The only people who stays for more than two days are DH's mother -- and she needs to know that she is in the way, because neither of us can stand her visiting for very long (if at all!), and my mother, who doesn't mind at all if I come in to get a change of clothes once a day.