If you have an 18 or 20 mile LSR planned for the time you are in Slovenia then it would not be a good idea. You will be shattered after it and all you will want to do is lie on the couch, eat, watch telly and preferably not even speak to the other half. Sight seeing will be a no no, even going out for drinks would not be recommended, you'll be hammered after a couple of glasses.
November - Sharm in Egypt - not much to do in the locality save snorkelling though.