That's a perfect all-in-one: Vivere Skyline, right in front of Festival Mall, Alabang... terrific view, because it's the only tall building in the area.
For a really special date:
Check into the hotel after lunch. Set a reservation with the spa (31st floor, right beside the restaurant). Let her relax, get a massage, then a hot bubble bath in the room, then a romantic candlelight dinner on the roofdeck restaurant (complete with piano music, thank God the World Cup is over!), then retire to a relaxing night's rest. The breakfast buffet is also a good wake-me-up before you check out...
If you can't spend on the hotel room (best room is the 5 - 6k one bedroom corner suite, with an L-shaped window facing the city, 20th - 27th floors), the other two will be fine, the spa has its own bathtubs. Price for massages are from 300-1000+ (I think), food isn't very expensive for a hotel, the two of you can eat within 600-700 pesos.
We did this with our baby on New Year's Eve (hard to get a room, they were all booked in advance!) to watch the fireworks, pero bad trip, there was a crowd and a band. It was fun to watch the sporadic fireworks shows afterwards, though, from the hotel room window.
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If it's just lunch, Gulliver's (? Is that right ?) in the Great Aberdeen Plaza on Quezon Avenue is great.Huge steaks and great Sea Bass dish.