WiFi is free in public spaces. You'll find a business center on site. A library, a terrace, and multilingual staff are also featured at Soho Boutique Casa Don Fernando.
Great location, nice lobby and nice room overlooking the Plaza Major. The two complaints I have concern the hair dryer in the bathroom, which stoped working every 30 seconds or so (so it took me over 30 minutes to dry my hair) and no extra blanked or duvet for the bed (we were there in January and it was cold).