Great location, trendy but not ideal for business travelers
I've stayed here three times over the last five months and after the last stay, I'm not sure I'd return. There is no doubt Hotel Valencia is at a perfect location with great shopping and food. The rooms are big and nice. Everything is clean and orderly although the armchair in the room shows some age. There are some nice features in the room such as the cool radio. The bed is really comfortable. You can park your car in a nearby garage for free. 
As a business traveler, however, there are a few things sorely missing. First, the internet is outrageously slow. There is no safe to put away any valuables and I always end up lugging everything around. There are very few electrical outlets, definitely not close to the desk if you want to or need to work. One time I checked in late at night and the TV didn't work. To their credit, they moved me into a giant suite. 
Customer service could also be improved. For my last stay, through no fault of the hotel, my corporate travel agent split my stay into two consecutive reservations. At check-in, they told me there was no way they could link my two reservations so i only have to check out once at the end of my stay. At any other hotel, they would have been able to link my two reservations. In addition, no one told me that the parking garage implemented new rules and that we were not supposed to park on the main floor. Every morning during my last stay, I found my car "locked" behind chains. Since the whole floor was behind chains, I thought it was some special arrangement the garage had for the morning, only to find out on Day 3 that the hotel was supposed to have told us not to park overnight on the main level.
I think it'd be a really fun place to stay for pleasure but it's not exactly ideal for a business stay.