The good:
The TC Marko is in a great location, near the lakes. It is easy to find, right on the highway. The food isn't bad, and the rates (both for the room and the meals) were decent. We had a triple room which was a good size - though not huge - for the three of us. We stayed in room 14 in the new building, up the hill from the restaurant and original building. We had a view of the pool. Sitting poolside after dinner was a highlight of the time in this area (well, outside of the lakes themselves!). The staff was all very accommodating.

The bad:
The shower wouldn't drain, so we stood in shower water up to our ankles. The single bed was terribly uncomfortable. The noise from the highway was a little loud at night, with the window open for respite from the heat. The breakfast (cold cuts and cheese) was a little lacking.

The UGLY:
The smell of raw sewage coming up in the bathroom. This drove me absolutely crazy. My husband and our friend couldn't smell it until the second day, but I found it unbearable from the minute we walked in.

Overall, one of the nicer places in the area and in spite of the problems I would recommend it (and probably even stay there again myself).

Stayed there a couple of times. Rooms are simple pension rooms, cleaniness is about ok, SAT-TV is available mostly German channels - picture quality could be improved - in our room most channels came with a disturbed picture.
The place also has a restaurant where breakfast is served. Continental style breakfast is filling and consists of bread, jam, sausages and cheese, sort an artifical orange juice and a wonderful coffee.
The major plus: the pension has a nice pool open in summer and also free car parking. Without a car you may be better staying closer to the National park as public transport seems to be very limited. By car it's about 10 mins to the north entrance of the park. About the same it's to city of Slunj northbound, where you find a cash dispenser, restaurants, shops etc. Rastoke with small waterfalls in a small canyon is also worth a short visit.
Another downside is noise coming the road outside - with closed windows not a problem, but in summer you may want to open the windows.
Price is reasonable: 42 Euros incl. breakfast. Half-litre Beer is less than 2 Euros, coffee is 1 Euro.

Meals in the restaurant are reasonable priced, however they charge you extra for side dishes.
Food quality seemed to have deteriorated since our last stay two years ago. We had a really bad meat meal - my worst restaurant experience for years. If you stick to the pizza you shouldn't be wrong, with meat dishes you may have to be a little careful. If you're going somewhere else there a lots of other places along the road.

Since I cannot write about the rooms, I can only share my experience with having a confirmed reservation. I booked a triple room for august 23 last year in November. I then confirmed in jan. 2008 and also 1 week before our trip. We had a great day of hiking and then we went to our room. My room was given away, so I would encourage anyone who is arriveing later call and confirm. I didn't have a cell phone, we did stay at a great sobe across the street that I will write a review about it.

We stayed two nights in June and were pleased with the triple, it would be too small for any longer. The place was clean and well priced at 55euro inc breakfast for 3 of us, we booked direct . Its was a bonus to go for a swim and a game of tennis after the plitvice national park! Food in the restaurant is well priced and good and staff were friendly. Given that there are a lot of rooms for rent in the area of the park , we were happy with this choice as we didn't have to get back in the car to go out to eat.