I played the first one through and loved it. I'm now playing Witcher 2 and loving it as well.
If your concern is the plot and back-story, I think you'll do fine just reading the plot summary on Wiki
As far as importing a save game, it carries over a little bit of money and gear, but nothing that gives a huge advantage. You'll have earned more money and better gear in a few hours anyway.
The biggest issue I can think of is in understanding the mindset of the character, the game, and the world. The Witchers are powerful warriors like you'd find in other games, but that's not what makes them interesting/unique. Their specialties are knowledge of the many exotic monsters and their alchemy with potions (and traps and bombs in this case).
Reading/researching about creatures would be optional codex/lore in another game, but here it is part of the quests themselves. Potions, bombs, traps would be optional consumables in another game - and I personally rarely use them - but here they're critical.
Many people are struck by the difficulty of the game, and it's usually because they're trying to sword-fight their way through everything. If you really make use of the traps, bombs, potions, oils, etc. you should do just fine.
Lastly, understand that the character Geralt is not trying to be a heroic soldier. Unlike in comparable RPGs, you're neither a great hero nor villain, just something like a tough exterminator travelling from village to village cleaning up their monster infestations. Getting caught up in politics and wars is anathema to the cynical Witcher who just wants to be on his way to the next job.
In the Witcher 2 the storage system do not belongs to Inn keepers but some other people.
Like for your case in Flotsam, the storage is set to a man down-stair sitting inside a bar or walking around it. (just left turn when you enter the room with fighting area)
And in Act 2, is the dwarf walking around or sitting in front of the whore camp's fire.
Best Answer
Prostitutes
in chapter 1, in basement of the tavern 2nd room. There are 4 of them.
in chapter 2, Brothel(tents) outside Kaedweni camp near Blue stripes encampment. Talk to madame and she will offer you to choose between her 5 prostitutes.
If you chose Roche's path you can access them anytime.
If you chose Ioverth's path you can access them only during the quest "Where Is Triss Merigold?" when you get sent near kaedweni camp.
Note: almost all prostitutes have unique "introduction" scene.However the sex scenes are shared between them,game randomly picks animation out of few possible one and plays it with the corresponding prostitute model.
Triss in chapter 1, on the quest The Rose of Remembrance.
Ves in chapter 2 (roche's path),on the quest "Ave Henselt!" after you defeat all opponents in the arena.
Mottle in chapter 2 (Ioverth's path), if you saved her from burning building in chapter 1 she will be in front the western entrance to the Vergen.
Succubus in chapter 2 (Ioverth's path), on the quest "With Flickering Heart".
Cynthia in chapter 3 (Ioverth's path), on the quest "The Secrets of Loc Muinne". Available only if you have "Enhanced Edition" of the game.
There are also some independent nude cutscenes:
Triss
In the Prologue she is in bed with geralt.
In the beginning of chapter 3 (Ioverth's path) if you help Philippa lift the curse Triss will be transformed from figurine naked.
Baroness LaVallette If you killed Arayan LaVallette in prologue then during the prison escape if you go through the floor hatch in one of the first cells after you get loose you will find her topless and about to be tortured.
Phillipa in chapter 2 (Ioverth's path), in Vergen there are 2 scenes with her and her "apprentice",inside her house.
Saskia in chapter 2 (Ioverth's path), on the quest in the harpy den if you collect all crystals and watch them on projector Saskia will appear naked in a dream of some dwarf.
Detailed guide with conversation options
Videos of love scenes