I was enticed to this hotel by tripadvisor's high rating and I was not disappointed. I found the staff very helpful and courteous. They furnished me with a map on my arrival and they marked where the hotel was for me, which I really appreciated.
The room (AR200/single) was very clean and the bathroom was nicely tiled and spotless. The bed was very comfortable and it was quiet.
They have a good security key system which entails sliding a card to get into your room and then sliding it into another holder once you're in your room. No traditional keys with holes in the keyhole for people to look in.
They have a computer in the lobby for patrons to use for the internet, which I found really great to check for emails.
The breakfast is included in the price and the lady serving it up offered me a 2nd cup of coffee for no additional fee (unlike another hotel i stayed at). She was very nice.
Oh yes, my flight home was at 9 pm and they let me store my bag for free all day long. Of course I gave the bellboy a little tip to retrieve my bag but what a great service hotel this is.
I would highly recommend Hotel Prince.

Prince Hotel is an excellent Tourist Class hotel, you cannot beat the location in a good neighbourhood, 6 blocks from the Subway (Subte) Gallao and 2 stations to Catederal
MicroCenter/ Florida St. Rooms are small, Bed is Comfortable A/C heating In Winter.
Cost as of 27/09/2009 $200 Pesos for a single $47 .US(double room) with Tax Continental Break fast. 270 Double. Arenales Avenida quietens down around 11pm; you will need ear plugs for the front rooms/ windows are double glazed..The staff are very efficient/ helpful and speak some English.
Transfers to/ from the airport(s) are painless with Manuel Tienda Leon Coaches 45 Pesos

I have been to Buenos Aires 8 times in 2 years, an amazing city.....on a prior trip I was simply walking the streets in Recoleta (the "Manhattan" or maybe "Upper West Side" of Buenos Aires and stumbled upon the Prince Hotel on a quiet side street.

For this trip I contact the hotel directly for reservations. Very prompt response, was quoted a rate of roughly US$45 a NIGHT INCLUDING TAX AND CONTINENTAL BREAKFAST. You MUST understand what a VALUE this is in Recoleta........because although Buenos Aires is, due to the exchange rate and Argentina's current stability, a GREAT BARGAIN......HOTELS IN BUENOS AIRES ARE MORE OR LESS PRICED AS THEY WOULD BE IN THE US OR EUROPE. In other words, they are not the BUY the rest of the nation is.....

PRINCE HOTEL is BASIC. But very comfortably "basic." Rooms are small, the mattresses a little thin, but the bathrooms are spotless, the hotel has an atmosphere that it is loved by the English speaking and very friendly staff, there is a computer in the lobby for guests to use, extensive cable tv in the rooms.....it is not LUXURY by any means, don't book it thinking it IS.....HOWEVER: IT COSTS ABOUT 1/2 WHAT PARK ELEGANCE KEMPSINSKI AND WILTON HOTEL DO (the 2 other places I have stayed) AND OFFERS JUST AS MUCH AS THOSE TWO VERY OVER-PRICED PROPERTIES DO. A lot of hotels in Buenos Aires which are "sold" as 3 and 4 star really are not. Heads-up there everyone.

Prince Hotel is an honest, basic, clean, intimate little property, a friendly hotel located on a QUIET (if you have been to Buenos Aires you KNOW what a commodity some QUIET can be!) side street in the BEST neighborhood. The breakfast was basic, there's no gym, and so on but the staff is friendly and you feel they are "aware" of you and appreciate your business.

My recommedation when visiting Buenos Aires is to just GO for it and spend the $300+ a night for the Alvear or Loi Suites Recoleta if you want bells and whistles and TRUE luxury, or TAKE A LOOK AT PRINCE HOTEL if you are shopping for something clean, modest.......because, again, a LOT of hotels in the city are going to charge you DOUBLE over the Prince and offer nothing more than the Prince Hotel. 7 nights came to US$299. I could NOT have been more pleased.

A really good experience. Check it out.

Very friendly, English speaking staff in a clean and convenient hotel. The rooms are small but suitable for anyone who plans to spend most of their time people watching, dining, and touring the neighborhoods. The location was VERY safe, even at night, and was very accessible. We were pleasantly surprised to find it as quiet given the prime location. The breakfast was also suitable and the staff VERY helpful and friendly. Not glamorous, but the location makes up for it!