First off, I should state that I work in the hotel industry, and there were many things I did like about the Hotel Wiesler. The location can't be beat, the rooms have wonderful views overlooking the Mur, the breakfast buffet was excellent (with fresh honey still in the honeycomb), and there is an interesting little tea room adjacent to the small fitness center and sauna. It was probably a grand hotel once upon a time, but has been redone in a shabby chic motif, with plywood used in many interesting ways. A couple of the walls in the rooms are intentionally left unfinished. While I can deal with patched walls and handwritten contractor notes in pencil, the red wine stain dripping down the wall from behind the bed was a bit of a stretch for me. It was not an art statement, it was a food stain. We had a superior room (205) that is located directly above the hotel entrance. At night, the light from the hotel marquis shone directly into the room, even with the shades pulled down. While the hotel was kind enough to accommodate us with our early arrival, I'm sure there was another room they could have assigned to us. We only saw 2 other hotel guests the entire time we stayed there, and we never saw anyone on the 2nd floor other than a staff member. The minimalist design was what attracted me to the hotel, but with the exception of a small mini-bar cabinet at the entrance, and a few hangers, there is no place to store your travel gear. We had our clothing laid out across our bags along the floor, and it never felt like we had settled in. The BBC channel was not available, and all the American movies and TV shows were dubbed in German. There is no coffeemaker in the room, and no place to get coffee in the wee morning hours. Coffee is served by request on a cup by cup basis in the restaurant, and is average at best. The smell of cigarette smoke is quite strong in the public areas. The dirty tea cups we left at the computer station were still there when we checked out 2 days later, which really surprised me. But all in all, it was an OK stay. I would probably not return, nor could I recommend this hotel to mature travelers or anyone staying more than 1 or 2 nights. The hotel is not designed for that market segment.

It seems the interior decorator(s) were left unchecked during the recent renovations. The
lobby now looks like an airport check in, the rooms have unfinished plaster walls (intentionally), open shower is a meter from the bed, and plywood furniture / tv frame / accents.

Ganz Cool gone ganz bad.

In general, the hotel is OK, just be careful about this otel.com, because you cannot know that for a MUCH higher price than e.g. booking.com (where rooms are very nice) you will get a small room on the fifth floor with a tiny and dirty window overlooking the city (the first option, before asking the receptionist to give us another room, was even worse: view at the wall of another buidling). Breakfast is excellent with a very gracious waiter. Graz is beautiful.

The Weisler is a nice hotel to stay in Graz, but it has some quirks. The budget rooms are on the fifth floor and are excellent in dry weather - but when it rains the noise of the rain beats down onto the roof and stopped some of our party from sleeping. And on our final night there was a party going on downstairs with the sound reverberating throughout the building and a strong smell of smoke seeping into the bedrooms (despite officially being non-smoking). I couldn't get the shower to work properly, but the bathtub was OK.
Having said that, beds are comfortable, and the breakfast buffet is excellent, overseen by an art deco mural, reminiscent of Botticelli's Venus. If you have time, they'll cook to order dishes like scrambled egg with pumpkin seed oil. The hotel is a little self-consciously "hip", but is quite relaxed. And it's a convenient location just a short walk from the city centre and very close to a tram stop.