My wife and I stayed at Hotel Palais Porcia (business double room) in Klagenfurt for 2 nights last week of June 2017.
Right away I must commend the staff. Check in was smooth, service was efficient.
NB: reception is on the 3rd floor so don't waste time on the ground floor as there aren't any staff there. Take lift to 3rd. If your room is on the 4th floor, you have to take the stairs. Reception staff will help if needed.
The decor is quite antique. Apparently the building has quite the history and it shows in room interiors. Separate WC & bath. Strong WiFi signal. Clean, nice bedding, ample space to stretch your legs after a long day! AirCon worked well.
Breakfast was delicious. They ask when you sit down if you want any hot drinks, so make sure you speak to the staff. Again, lovely staff and the service was always prompt. Very classy decor and the place is quite quiet. Loved it.
Our one gripe was that there was no kettle in the room. It is quite frustrating to not be able to make a cup of tea in hotels whenever I feel like.
Location: the best thing about this hotel. Fantastically located for everything - high street, sightseeing, bus connections, food, etc. From Heiligengeistplatz bus stop (Spar supermarket next to it) you can go practically everywhere including the train station.
Bus 10 takes you to Strandbad stop for Woerthersee. €2.20 ticket. Take the ferry/cruise; best €15 I spent this summer! Food/drinks on board too.
Recommended!