I am going to try to be as fair as possible, but the fact is, the woman who runs this establishment deceived and swindled us. I would highly recommend people to not stay here, in retrospect we have realized that this woman sees people as dollar bills (or whatever currency you happen to trade in). In addition, the feeling of being ripped off nearly ruined our vacation, it is the very opposite feeling you want to have whilst on vacation.

First, I will describe the B&B and I will finish with an in depth description of the swindle for those who are interested.

The B&B is quite nice, it was quite clean and the ambiance was nicely done. The staff, including the manager (owner?), were very nice and helpful in advice about Vina Del Mar. The location is not optimal, its up a hill in a bit of a run down part of town. There is no view and if you have suitcases you should take a Taxi (cheap, about 3,000 pesos, 6 dollars US).
The breakfast is quite pedestrian, bread you can toast, a piece of cheese, a piece of shortbread, a yogurt, and instant coffee or tea. The breakfast is nothing special, but its relatively standard amongst all the places we stayed in Chile (5), which is a pretty good description of the B&B in general.

As for the swindle, its a bit of a long story. We originally planed to stay for 3 nights, but we decided to go back to Santiago a day early to make the trip to the airport easier. So we e-mailed the B&B in advance to try to cancel our 3rd night (a Thursday night), however we were informed that we would not be refunded our money for the night because they were not busy enough to replace the business. When we arrived, we tried to plead our case saying we really wanted to be able to get to the airport easier, and the manager told us that, regretfully, that was her policy. She then added, that if she could rent the room for the 3rd night she would give us a full refund for the night, but was confident it would not happen. At this point she misunderstood us and thought that we were leaving that 3rd night (the Thursday) to fly home, but our flight was Friday, it was more a matter of convenience for us. Without a refund we decided we couldn't afford to pay for the night and travel to Santiago and pay for another hostel, so we decided to stay that 3rd night that we paid for. On Thursday morning, the day that she thought we were flying home, she seemed rather nervous and around the standard check out time, she asked if we wanted a taxi, apologized for not being able to refund our money for the night, and told us to have a nice flight. We informed her that we would be staying for the night that we had paid for and that in actuality, our flight was on Friday. She, confused, then started to backtrack and informed us that she had rented the room and that we had to leave. Us, confused, informed her that she then owed us a refund for the night. She said, of course, and then told us that since it was a credit card payment it would be easier if she just payed for our hostel in Santiago, which she said would be the same price. We, stupidly, agreed and packed our stuff, after all, we had to pack and it was going to work out for the best for us since we wanted to go back to Santiago anyways and it would be easier for her to find the hostel than would be for us. When we arrived at the Hostel in Santiago they told us they had talked to other manager. The following morning (Friday), the Hostel owner informed us that the manager of Casa Del Sol had not transferred the payment. Concerned, we offered to pay and asked how much we should give them, and they told us the price was half of the price of Casa Del Sol. and that we didn't need to pay since they had an agreement with the manager of Casa Del Sol and it wasn't our fault (good honest people). When they saw our surprise, since Casa Del Sol had ripped us off for $~40 (half of the price of the room), they told us that when she called they were confused because she had told them to tell us that the room was $~90, but that she would be transferring the $~50 that was their rate for the night.
A cheater, liar, and a bad person. We may have only lost $~40, but it was the feeling that we had been lied to and cheated that really hurt our feelings and caused us to leave Chile with a bad taste in our mouth. Please don't stay here, if just one person passes on this place, all her swindling will be for nothing ($40 gained, business lost).

the good:
Very friendly staff and they give you a good overview of the town.
Clean rooms
Good mattresses

the not so good:
The name is bed and breakfast but the breakfast is very poor.
Decent place to go alone or in a backpacking expedition....Not to take family and children.
Rooms are small and do not take into account if you are taking a child or no.
There is a dog and a cat so if you are allergic.....
Decent price but you have to pay upfront when checking in and in cash
not very centrally located

By the time one surfs the net in search of decent and affordable places to stay around the world, you need to see pictures of the rooms -more than one, if possible-, more than the rest of the common use facilities. So when I clicked on Casa del Sol and saw neat, clean, sun-lighted rooms I had a good hunch. What I didn`t expect was to find that the rest of the facilities were as warm and cozy and hospitalary as the rooms itself. A peaceful and yet cheerful "vives" were easy to be felt. Throughout the five days I stayed I didn`t feel I was staying on a b&b place, I felt the Angels had driven me just where I wanted to be, with people that made me feel the way I wanted to feel: welcome. Casa del Sol makes honnor to its name: It`s sunny not only on the inside; Ninfa, Honey, Rosie, Estrellita and Luna are themselves shinny and marvellous beings. I plan to return before the end of the year!!!! and will enclose some of my pics so that you all can see what I mean :).

Casa Del Sol is great. The location is great too. Just 2 blocks from the beach. Vina Del Mar has a breathtaking overlooking.
B&B is comfortable, pleasant and cool. You feel in your home. The owner is very kind and talkative. Any question you can answer to her. If you like pets, you will meet the Garfield, because Luna lives there, it look like Garfield. Very funny!!! I loved all.