We stayed at the Umaid Mahal for three nights in October 2012.
Having arrived by train in Jaipur, we got a free pickup which worked out perfectly fine.
The hotel is situated maybe 3km West of the old parts of the city. So it is a 15min drive into town BUT the surroundings of the hotel are perfectly quiet. For us this was a fair trade-off.
The rooms are extremely nicely decorated in Rajasthani style. Materials are of a very high standard - the luxurious rain shower is kept entirely in black marble with a nice glass front. Probably the nicest bathroom we had in India so far.
Chairs and furniture were nicely carved, very dark wood.
Walls and ceiling were extremely delicately painted.
Breakfast was served in a buffet form, both Indian and Continental style, egg dishes were made to order. Food and drinks were good. Service was ok.
They also have a rooftop restaurant with some nice views, but we only had tea there once, so we cannot comment on the food there.
Overall, we definitely recommend this hotel, it was one of the nicest hotels we had in India!