which is the best router and switch to install in hotels for wifi connections?

Answer 1

Best router/switch or best wireless gear? I'll answer both... Cisco. Depending on size/performance requirements, go with a 2800 or 3800 series ISR (Integrated Services Router).

Not sure what your budget is or the size of your hotel, but if you want the best, buy Cisco wireless LAN controllers and access points. You should be looking at the 4400 series WLAN controllers with WCS (wireless control system) software and the 1200 series lightweight access points. This will also give you the ultimate in terms of security with built-in IDS/IPS and rouge detection and location tracking and wireless guest networking options. There's also a WLAN controller that comes on a network module that can plug into the NM slot on your 2800 or 3800 series router.

Note, instead of going with WLAN controller appliances or router network module, you could also buy a model of their 3750 switch that has an integrated WLAN controller in a 24-port 10/100/1000 switch with built-in PoE... that's a great way to power your access points and have the controller all in the same box. Controller size depends on number of access points, such as 12, 25, 50 or 100. For a few dozen APs for example, consider a 4402-50 or 4404-100 controller with WCS software and 1242AG access points.

Do NOT attempt to do this with SOHO consumer access points like Linksys or Netgear or Dlink or you will be sorry. There are many reasons not to use these consumer APs for your application including security, support, performance, antenna options, software features, high availability features, VoWLAN, etc... Even if you only want to have a few access points for guest WiFi access in your hotel lobby, look at the 2006 controller (up to 6 APs) and still 1242AG APs and skip the WCS software to keep the whole thing under a couple grand.
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Answer 2

that really depends on how many rooms and other devices you are trying to service, what type of Internet connection you will have, how far far away the systems are and a few other minor details. If you are talking about a relatively healthy deployment in a large hotel, I would take a long hard look at Cisco gear. I have been using there gear for many, many years. Rock solid gear and rock solid support. However, if you are talking about a much smaller deployment in smaller hotel, then even the lower end Cisco products may exceed your budget.