The Spencer Hotel
Excise Walk
IFSC
Dublin 1
Ireland
T:+353 1 4338800
http://www.thespencerhotel.com/
Note: To obtain a discounted rate at The Spencer, use the reference of either "ISOI" or "Trend Micro"

There are plenty of other hotels in close proximity, since The Spencer is centrally located in Dublin City:

https://www.google.com/maps/search/hotels/@53.3480804,-6.2488231,15z/data=!4m8!2m7!3m6!1shotels!2sSpencer+Hotel+Dublin+City,+Excise+Walk,+IFSC,+Dublin+1!3s0x485c490257b389a7:0x640fa38258dfc84d!4m2!1d-6.243287!2d53.3479971

Here are just a few alternate hotels within short walking distance:

The Gibson Hotel (use booking code: ISOI15, must ring hotel to obtain discount)
http://www.thegibsonhotel.ie/

Jurys Inn: (Use Booking code "ISOI15071015", must ring hotel to obtain discount)
https://www.jurysinns.com/hotels/dublin/custom-house

The Ferryman
http://www.theferrymantownhouse.ie/

Maldron Hotel Cardiff Lane
http://maldronhotelcardifflane.com/

The Marker Hotel
http://www.themarkerhoteldublin.com/